Category:

1 in. Size PVC

10 products

1" PVC fittings are best for making light-load PVC projects such as laundry carts & garden structures.

FORMUFIT 1" PVC fittings and pipe products are an ideal size for indoor and outdoor home projects. They work best to build items such as laundry carts, garden structures, and playhouses.  These include cat hammocks, dog agility equipment, and light shelving.

  • External-fit 1" Size PVC products have a socket diameter of 1-5/16" (1.315 in.), which is equal to the actual outside diameter of a 1" size PVC pipe.
  • Internal-fit products will only fit 1" Schedule 40 size PVC pipe, which has an average inside diameter of 1.049 inches.  Internal-fit products will not work with Schedule 80 or thinwall PVC pipe sizes.

Important Size Info

FORMUFIT 1 in. fitting products work with 1 in. Schedule 40 PVC pipe, which has an actual outside diameter of 1-5/16" (1.315 in.). For sizing information, please see our PVC 101 page.

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FORMUFIT 1-1/4 in. 5-Way PVC Cross fittings in White connect 1-1/4" Size PVC pipe at five points on three planes. 5-Way Cross fittings are essential when building a base, stand, or footing applicat...
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FORMUFIT 1-1/2 inch 3-Way PVC Fittings in White connect three pipe segments to create corners in projects, structures, and PVC plans. These 1-1/2 in. 3-Way corner fittings accept three (3) segments...
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FORMUFIT 1" Internal Couplings in White connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5...
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FORMUFIT 1" Internal Couplings in Black connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5...
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FORMUFIT 1" Internal Couplings in Gray connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5-...
Regular Price $2.89
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FORMUFIT 1" Internal Couplings in Red connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5-f...
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FORMUFIT 1" Internal Couplings in Orange connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend ...
Regular Price $2.89
Sale price $2.89
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FORMUFIT 1" Internal Couplings in Yellow connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend ...
Regular Price $2.89
Sale price $2.89
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FORMUFIT 1" Internal Couplings in Green connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5...
Regular Price $2.89
Sale price $2.89
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FORMUFIT 1" Internal Couplings in Blue connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5-...
Regular Price $2.89
Sale price $2.89
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FORMUFIT 1" Internal Couplings in Purple connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend ...
Regular Price $2.89
Sale price $2.89
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Price per Unit
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FORMUFIT 1" Internal Couplings in Pink connect two segments of 1 in. Schedule 40 PVC pipes internally, leaving a smooth, flush, and hidden connection. The best answer for when you need to extend 5-...

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