3-inch-square-tubing

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3in x 3in x 3/16in Wall Steel Square Tube 12in Piece
3in x 3in x 3/16in Wall Steel Square Tube 12in Piece

$17.14

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3in x 3in x 3/16in Wall Steel Square Tube 48in Piece
3in x 3in x 3/16in Wall Steel Square Tube 48in Piece

$73.52

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3in x 3in x 3/16in Wall Steel Square Tube 72in Piece
3in x 3in x 3/16in Wall Steel Square Tube 72in Piece

$108.40

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 72in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 72in Piece

$69.35

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3 x 3 x 1/8 STEEL SQUARE TUBE 1PC 36 INCHES LONG
3 x 3 x 1/8 STEEL SQUARE TUBE 1PC 36 INCHES LONG

$45.95

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3"X 3"X .120"(11 Gauge) Wall Steel Square Tube 12" Piece
3"X 3"X .120"(11 Gauge) Wall Steel Square Tube 12" Piece

$12.37

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12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...
12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...

$17.96

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Square Tubing Plugs 3" X 3"(75 Mm X 75 Mm), Plastic Tubing End Caps Durable
Square Tubing Plugs 3" X 3"(75 Mm X 75 Mm), Plastic Tubing End Caps Durable

$13.99

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3"x 3"x 1/4" Wall x 12" Long ALUMINUM SQUARE TUBE 6061 T6 3" SQ x .25" New
3"x 3"x 1/4" Wall x 12" Long ALUMINUM SQUARE TUBE 6061 T6 3" SQ x .25" New

$36.75

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MyBoxSupply Square Mailing Tubes, 3" x 3" x 12", White, 25/Bundle
MyBoxSupply Square Mailing Tubes, 3" x 3" x 12", White, 25/Bundle

$34.99

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3/4"x 3/4"x 1/8" Wall x 36" Long ALUMINUM SQUARE TUBE 6063 T52 .5" ID
3/4"x 3/4"x 1/8" Wall x 36" Long ALUMINUM SQUARE TUBE 6063 T52 .5" ID

$7.29

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STEEL SQUARE TUBING (1/16" to 1/4” THICK) HEAVY DUTY (up to 6-feet Length)
STEEL SQUARE TUBING (1/16" to 1/4” THICK) HEAVY DUTY (up to 6-feet Length)

$29.40

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 48in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 48in Piece

$47.12

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3-1/2in x 3-1/2in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece
3-1/2in x 3-1/2in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece

$28.99

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 36in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 36in Piece

$36.44

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 96in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 96in Piece

$92.46

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3" x 3" Square Tubing Plug   Fits 3" OD  Tubing Cap  Various Package Sizes
3" x 3" Square Tubing Plug Fits 3" OD Tubing Cap Various Package Sizes

$13.75

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3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 8
3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 8

$19.60

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3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 12" Piece
3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 12" Piece

$6.60

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3"X 3"X .120"(11 Gauge) Wall Steel Square Tube 6" Piece
3"X 3"X .120"(11 Gauge) Wall Steel Square Tube 6" Piece

$9.31

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3" Inch | Square Plastic End Cap Tubing Hole Post Plug | Multiple Quantities
3" Inch | Square Plastic End Cap Tubing Hole Post Plug | Multiple Quantities

$19.00

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3/4" x 3/4" x 36", (0.035"W), 4130 Chromoly Alloy Steel Square Tube, Seamless
3/4" x 3/4" x 36", (0.035"W), 4130 Chromoly Alloy Steel Square Tube, Seamless

$35.42

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3/4" I.D. x 1" O.D. Aluminum Square Tube Hollow x 72 Inch Long 1/8" Wall NEW
3/4" I.D. x 1" O.D. Aluminum Square Tube Hollow x 72 Inch Long 1/8" Wall NEW

$35.81

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1-3/4in x 1-3/4in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece
1-3/4in x 1-3/4in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece

$13.67

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3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 4
3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 4

$13.52

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Steel Square Tube 3" x 3" x 8" Long x 1/4" Wall (0.250")
Steel Square Tube 3" x 3" x 8" Long x 1/4" Wall (0.250")

$18.63

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3" x 3" x 12"-Long x .120" Wall Steel Square Tube-- 3" Square Steel Tube
3" x 3" x 12"-Long x .120" Wall Steel Square Tube-- 3" Square Steel Tube

$28.46

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3/4" Inch | Square Plastic End Cap Tubing Hole Post Plug | Multiple Quantities
3/4" Inch | Square Plastic End Cap Tubing Hole Post Plug | Multiple Quantities

$5.50

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3in x 3in x 1/4in Wall Steel Square Tube 36in Piece
3in x 3in x 1/4in Wall Steel Square Tube 36in Piece

$66.63

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 60in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 60in Piece

$57.79

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3in x 3in x 1/4in Wall Steel Square Tube 60in Piece
3in x 3in x 1/4in Wall Steel Square Tube 60in Piece

$111.08

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3/4in x 3/4in x .078 Wall (14 Gauge) Steel Square Tube 36in Piece
3/4in x 3/4in x .078 Wall (14 Gauge) Steel Square Tube 36in Piece

$8.25

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3 X 3 Steel Square Tube 1/4" Tubing Wall Steel Brace Support Welding 10" Long
3 X 3 Steel Square Tube 1/4" Tubing Wall Steel Brace Support Welding 10" Long

$30.20

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3" X 3" X .188" X 8" Long Square Aluminum Tube 6063-T52 Mill Stock 3/16" Wall
3" X 3" X .188" X 8" Long Square Aluminum Tube 6063-T52 Mill Stock 3/16" Wall

$24.95

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3" Square Tubing Heavy Duty Plastic Plug End Cap Insert 3x3 8-14 Tube Pipe Post
3" Square Tubing Heavy Duty Plastic Plug End Cap Insert 3x3 8-14 Tube Pipe Post

$6.59

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1-3/4in x 1-3/4in x 1/8in Wall (11 Gauge) Steel Square Tube 12in Piece
1-3/4in x 1-3/4in x 1/8in Wall (11 Gauge) Steel Square Tube 12in Piece

$7.06

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3" Square Tubing Caps Plastic End Caps for Square Cubing  3x3 8-14 Plug Tube Cap
3" Square Tubing Caps Plastic End Caps for Square Cubing 3x3 8-14 Plug Tube Cap

$18.99

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3"x 3"x 1/8" Wall Aluminum Square Tube x 12" Long, 6061 Aluminum, Box Tube
3"x 3"x 1/8" Wall Aluminum Square Tube x 12" Long, 6061 Aluminum, Box Tube

$16.19

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3in x 3in x 3/16in Wall Steel Square Tube 36in Piece
3in x 3in x 3/16in Wall Steel Square Tube 36in Piece

$56.07

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Steel Telescoping Square Tube Combo Pack 1-3/4" and 1-1/2" Telescope Tube x 36"
Steel Telescoping Square Tube Combo Pack 1-3/4" and 1-1/2" Telescope Tube x 36"

$81.88

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4ft square Aluminum Tubing 3/4" x 3/4" x  1/8" wall 1/8" square  corner 6063-T52
4ft square Aluminum Tubing 3/4" x 3/4" x 1/8" wall 1/8" square corner 6063-T52

$12.47

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3" x 3" x 21", (0.120"W), Steel Square Tube, ASTM A500
3" x 3" x 21", (0.120"W), Steel Square Tube, ASTM A500

$36.79

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3"X 3"X 3/16" Wall Steel Square Tube 10" Piece
3"X 3"X 3/16" Wall Steel Square Tube 10" Piece

$12.88

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2-1/2"X 2-1/2" X 1/8" Wall 6063 T52 Aluminum Square Tube 36" Piece
2-1/2"X 2-1/2" X 1/8" Wall 6063 T52 Aluminum Square Tube 36" Piece

$18.43

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3" x 12"-long x 1/4" Wall 6063 T52 Aluminum Square Tube-- 3" x .250" wall
3" x 12"-long x 1/4" Wall 6063 T52 Aluminum Square Tube-- 3" x .250" wall

$25.20

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 12in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 12in Piece

$12.20

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3/4" O.D. Steel Square Tube Hollow 6 ft Long 1/8" Wall 1015 Alloy
3/4" O.D. Steel Square Tube Hollow 6 ft Long 1/8" Wall 1015 Alloy

$38.00

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Steel Telescoping Square Tube Combo Pack 2" and 1-3/4" Telescope Tube x 12"
Steel Telescoping Square Tube Combo Pack 2" and 1-3/4" Telescope Tube x 12"

$42.31

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3"x 3"x 1/4" Wall x 24" Long ALUMINUM 6061 T6 SQUARE TUBE EXTRUDED Cut New
3"x 3"x 1/4" Wall x 24" Long ALUMINUM 6061 T6 SQUARE TUBE EXTRUDED Cut New

$38.82

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3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece
3in x 3in x 1/8in Wall (11 Gauge) Steel Square Tube 24in Piece

$25.77

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3"x 3"x 1/4" Wall x 8" Long ALUMINUM 6061 T6 SQUARE TUBE EXTRUDED Cut New
3"x 3"x 1/4" Wall x 8" Long ALUMINUM 6061 T6 SQUARE TUBE EXTRUDED Cut New

$25.62

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2in x 2in x 1/4in Wall Steel Square Tube 36in Piece
2in x 2in x 1/4in Wall Steel Square Tube 36in Piece

$40.25

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1 1/2 X 3 Steel Rectangular Square Tubing 1/8" Welding Bracing Support 10" L
1 1/2 X 3 Steel Rectangular Square Tubing 1/8" Welding Bracing Support 10" L

$13.56

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1/2"X 1/2" X .065 Wall (16 Gauge) Steel Square Tube 36" Piece
1/2"X 1/2" X .065 Wall (16 Gauge) Steel Square Tube 36" Piece

$6.88

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Steel Telescoping Square Tube 1-3/4" x 11"-Long x .105w-- TELESCOPING TUBE
Steel Telescoping Square Tube 1-3/4" x 11"-Long x .105w-- TELESCOPING TUBE

$17.72

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3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 2
3 INCH SQUARE TUBING PLUG/END CAP 3" QUANTITY 2

$7.04

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3 X 3 Steel Square Tube 1/4" Tubing Wall Steel Brace Support Welding 12" Long
3 X 3 Steel Square Tube 1/4" Tubing Wall Steel Brace Support Welding 12" Long

$38.40

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Tubes White Brown Box Corrugated Square 3" Round 2" Mailing Tube Storage  50 100
Tubes White Brown Box Corrugated Square 3" Round 2" Mailing Tube Storage 50 100

$49.95

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Sterling Silver Square Tubing 12 inch long hollow rods pipe 2.5 3 3.5 or 4 mm
Sterling Silver Square Tubing 12 inch long hollow rods pipe 2.5 3 3.5 or 4 mm

$14.95

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3/4" I.D. x 1" O.D. Aluminum Square Tube Hollow x 72" Long 1/8" Wall NEW
3/4" I.D. x 1" O.D. Aluminum Square Tube Hollow x 72" Long 1/8" Wall NEW

$39.50

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4 Pieces 3/4"x 3/4"x 1/16" Wall 12" Long ALUMINUM SQUARE TUBE 6063 T52 .625" ID
4 Pieces 3/4"x 3/4"x 1/16" Wall 12" Long ALUMINUM SQUARE TUBE 6063 T52 .625" ID

$16.50

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3"X 3"X 3/16" Wall Steel Square Tube 12" Piece
3"X 3"X 3/16" Wall Steel Square Tube 12" Piece

$15.10

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3 X 3 Steel Square Tubing 3/8” Thick Wall Steel Brace Support Welding 3" L
3 X 3 Steel Square Tubing 3/8” Thick Wall Steel Brace Support Welding 3" L

$13.86

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3" X 3" X 5/16" Wall Steel  Square Tube 6" Piece
3" X 3" X 5/16" Wall Steel Square Tube 6" Piece

$13.39

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4 Pieces 3/4"x 3/4"x 1/8" Wall x 12" Long ALUMINUM SQUARE TUBE 6063 T52 .5" ID
4 Pieces 3/4"x 3/4"x 1/8" Wall x 12" Long ALUMINUM SQUARE TUBE 6063 T52 .5" ID

$21.49

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3"x 3"x 1/8" Wall ALUMINUM SQUARE TUBE 42" Long 6063 T52 Extruded Tube Cut New
3"x 3"x 1/8" Wall ALUMINUM SQUARE TUBE 42" Long 6063 T52 Extruded Tube Cut New

$33.23

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3"x 3"x 1/8" Wall x 14" Long ALUMINUM SQUARE TUBE 6063 T52 3" SQ x .125"
3"x 3"x 1/8" Wall x 14" Long ALUMINUM SQUARE TUBE 6063 T52 3" SQ x .125"

$28.59

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12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...
12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...

$17.76

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3 X 3 Steel Square Tubing 3/8” Thick Wall Steel Brace Support Welding 8" L
3 X 3 Steel Square Tubing 3/8” Thick Wall Steel Brace Support Welding 8" L

$29.26

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4 Pieces 3" X 3" X .250" X 4" LENGTH SQUARE ALUMINUM TUBE 6063-T52
4 Pieces 3" X 3" X .250" X 4" LENGTH SQUARE ALUMINUM TUBE 6063-T52

$48.69

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3"X 3"X 1/4" Wall Steel Square Tube 12" Piece
3"X 3"X 1/4" Wall Steel Square Tube 12" Piece

$17.60

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Aluminum Square Tube  Hollow  36" Long x 1 Inch I.D. x 1-1/4" O.D. 1/8" Wall NEW
Aluminum Square Tube Hollow 36" Long x 1 Inch I.D. x 1-1/4" O.D. 1/8" Wall NEW

$41.95

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4 Pieces 3/4"x 3/4"x 1/16" Wall 24" Long ALUMINUM SQUARE TUBE 6063 T52 .625" ID
4 Pieces 3/4"x 3/4"x 1/16" Wall 24" Long ALUMINUM SQUARE TUBE 6063 T52 .625" ID

$11.12

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Steel Square Tube 3" x 3" x 4" Long x 1/4" Wall (0.250")
Steel Square Tube 3" x 3" x 4" Long x 1/4" Wall (0.250")

$12.08

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3" Square Tubing Plugs   3" Tube Caps   Black Matte   Economy Pack of 4 Plugs
3" Square Tubing Plugs 3" Tube Caps Black Matte Economy Pack of 4 Plugs

$12.78

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3/4" O.D. Steel Square Tube Hollow 6 ft Long 1/8" Wall  1015 Alloy
3/4" O.D. Steel Square Tube Hollow 6 ft Long 1/8" Wall 1015 Alloy

$35.97

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3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 36" Piece
3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 36" Piece

$9.24

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Steel Square Tube 3" x 3" x 5" Long x 1/4" Wall (0.250")
Steel Square Tube 3" x 3" x 5" Long x 1/4" Wall (0.250")

$12.94

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Steel Square Tube Hollow 3/4" O.D. x 6 Feet Long 1/8 Inch Wall  1015 Alloy NEW
Steel Square Tube Hollow 3/4" O.D. x 6 Feet Long 1/8 Inch Wall 1015 Alloy NEW

$35.39

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Steel Telescoping Square Tube Combo Pack 1-3/4" and 1-1/2" Telescope Tube x 24"
Steel Telescoping Square Tube Combo Pack 1-3/4" and 1-1/2" Telescope Tube x 24"

$60.69

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2"x 2"x 1/4" Wall ALUMINUM SQUARE TUBE 36" Long 6061 T6 New
2"x 2"x 1/4" Wall ALUMINUM SQUARE TUBE 36" Long 6061 T6 New

$36.56

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3/4" x 3/4" x 12", (0.035"W), 4130 Chromoly Alloy Steel Square Tube, Seamless
3/4" x 3/4" x 12", (0.035"W), 4130 Chromoly Alloy Steel Square Tube, Seamless

$20.57

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12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...
12Pack 75mm (3 Inch) Square Plastic Plug, Square Tubing End Caps, Tubing Post...

$16.70

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3"x 3"x 1/8" Wall ALUMINUM SQUARE TUBE 24" Long 6063 T52 New
3"x 3"x 1/8" Wall ALUMINUM SQUARE TUBE 24" Long 6063 T52 New

$23.99

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3/4 INCH SQUARE TUBING PLUG/END CAP 3/4" QUANTITY 12
3/4 INCH SQUARE TUBING PLUG/END CAP 3/4" QUANTITY 12

$6.86

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3-1/2in x 3-1/2in x 1/4in Wall Steel Square Tube 12in Piece
3-1/2in x 3-1/2in x 1/4in Wall Steel Square Tube 12in Piece

$24.31

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Square Fiberglass Hollow Tube 3/4" I.D. x 1" O.D. x 5 Feet Long 1/8" Wall ISOFR
Square Fiberglass Hollow Tube 3/4" I.D. x 1" O.D. x 5 Feet Long 1/8" Wall ISOFR

$37.50

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3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 6" Piece
3/4"X 3/4"X .120"(11 Gauge) Wall Steel Square Tube 6" Piece

$5.93

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3/4" X 3/4" X 1/8" X 48" Length Square Aluminum Tube
3/4" X 3/4" X 1/8" X 48" Length Square Aluminum Tube

$10.13

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3/4" Inch Square Tube End Plug  3/4" Chair Glide  Blanking Insert Plug  Black
3/4" Inch Square Tube End Plug 3/4" Chair Glide Blanking Insert Plug Black

$16.25

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3"X 3"X 1/4" Wall Steel Square Tube 6" Piece
3"X 3"X 1/4" Wall Steel Square Tube 6" Piece

$11.92

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3" X 3" X .188" X 6" Long Square Aluminum Tube 6063-T52 Mill Stock 3/16" Wall
3" X 3" X .188" X 6" Long Square Aluminum Tube 6063-T52 Mill Stock 3/16" Wall

$23.32

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10pc 1" inch Square Tube Hole Plug Plastic End Cap 1x1 Tubing Glide Tips Insert
10pc 1" inch Square Tube Hole Plug Plastic End Cap 1x1 Tubing Glide Tips Insert

$6.99

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3" Square Tubing Caps   3" Square Tubing Plugs   Post Caps  8 Plugs per Package
3" Square Tubing Caps 3" Square Tubing Plugs Post Caps 8 Plugs per Package

$26.50

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3" Square Tubing Plug   Black  PE  3" Tubing Cap  Post Caps  4 Plugs per Package
3" Square Tubing Plug Black PE 3" Tubing Cap Post Caps 4 Plugs per Package

$12.78

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Square Rectangle Tubing Plastic End Cap Plug Pipe Tube Chair Insert Glide Covers
Square Rectangle Tubing Plastic End Cap Plug Pipe Tube Chair Insert Glide Covers

$5.12

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2" OD x 1/8" Wall 6061 T6 ALUMINUM Round Tube 36" long Seamless 1.75 ID Cut New
2" OD x 1/8" Wall 6061 T6 ALUMINUM Round Tube 36" long Seamless 1.75 ID Cut New

$14.89

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3/4"X 3/4" X .083 Wall (14 Gauge) Steel Square Tube 36" Piece
3/4"X 3/4" X .083 Wall (14 Gauge) Steel Square Tube 36" Piece

$8.51

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3in x 3in x 3/16in Wall Steel Square Tube 84in Piece
3in x 3in x 3/16in Wall Steel Square Tube 84in Piece

$126.46

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3in x 3in x 1/4in Wall Steel Square Tube 84in Piece
3in x 3in x 1/4in Wall Steel Square Tube 84in Piece

$155.48

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