Glazelock GLZ18 1/4" Thick Shim 3"L x 2 5/16"W with 3/4" Slot U-shaped Horseshoe Plastic Flat Shims Black 1000pc/box

Solid Thickness, made of durable and consistent High Impact Polystyrene Used for installing, aligning, and leveling commercial and residential windows, doors, cabinets and countertops, plumbing; Used for tile spacers Fit around bolts and anchors, provide a secure and stable stacking solution Will not rot, shrink or swell Glazelock quality and durability is trusted by high performance professionals across several industries Made in the USA