Perfect fit every time: Use our plastic frame shims for easy positioning and flawless alignment, essential for both new installations and window replacements. Plastic leveling shims for exterior use. Plastic leveling shims. Versatile application: Suitable for both window and door frame installations, our shims offer exceptional adaptability to diverse installation requirements in various construction scenarios. Door frame shims, flat plastic shims. Reliable structural support: These plastic shims feature a solid design, solving common problems such as frame sag and providing a robust fit for doors and windows. Plastic leveling shims, tile spacers. Quick and easy installation: Door frame support shims allow for quick and precise adjustment, speeding up door and window installations and saving valuable time on construction projects. Glazing spacer for window frames, plastic load-bearing wedges Long-term durability: With exceptional weather resistance, our window glazing blocks maintain their performance in outdoor environments, reducing maintenance. Window leveling wedges and window frame wedges