Glazelock Square Horseshoe Shims 4" x 3" - 7/8" Slot, Heavy-Duty Plastic Leveling Shims, Made in USA

Heavy-Duty Square Design for Maximum StabilityGlazelock Square Horseshoe Shims deliver maximum stability with robust 4" x 3" dimensions. Featuring a large 7/8" slot, these heavy-duty plastic shims provide superior support for demanding construction applications. Invented by a window installer and made in the USA since 1997.Key Benefits: Heavy-Duty Dimensions: 4" x 3" size provides maximum stability and load distribution Large Slot Opening: 7/8" slot accommodates larger pipes, bolts, and hardware Square Design: Enhanced stability compared to traditional horseshoe shapes Superior Load Bearing: Robust construction handles heavy-duty applications Professional Grade: Trusted by contractors since 1997 for reliable performance Versatile Applications: Perfect for windows, doors, cabinets, and industrial use Made in USA: Superior manufacturing quality and consistency Perfect For: Heavy Window Installation: Maximum support for large commercial windows Industrial Door Projects: Heavy-dut