Mixed 75mm Window Packers are an essential accessory for precise positioning and alignment of windows and doors during installation. This pack of 20 includes five packers each in four thicknesses — 1.5mm, 3.2mm, 5.0mm, and 10.0mm — all conveniently colour-coded for quick and easy thickness selection on the job. The U-shaped design allows packers to fit around obstructions such as bolts, screws, and nails, making them highly versatile across a wide range of residential, commercial, and industrial applications. Each packer features a 4.5mm countersink hole for a flush screw finish and a bevelled leg for easier levelling. Built to last, these packers are UV stable, waterproof, and resistant to rot, shrinkage, and cracking. They are drillable and cuttable, and compatible with nails, staples, or screws. With a high compressive strength capable of supporting up to 5 tonnes, these lightweight packers deliver reliable structural support and help maintain even gaps for a smooth, professional finish in all environments.