Features 1、FLEXIBLE AND EXPANDABLE: Air conditioning window unit brackets can easily extend from 24in to 38in to accommodate most single or double hung window and accommodate 4in to 11in exterior wall thicknesses 2、HEAVY STEEL CONSTRUCTION: Durable, premium steel plate is coated with epoxy ensures lasting support for window bearing up to 165lb 3、QUICK AND EASY INSTALLATION: Set up in your home in minutes, attaching air conditioning brackets to window frames without tools, drilling holes, ladders or hardware 4、ENHANCED SAFETY FEATURES: Support legs and extension beams provide additional support on the inside and outside of the window AC support bracket, with integrated rubber legs for added stability 5、SIMPLE AND TOOL FREE ASSEMBLY: Parts can easily lock each other without tools; The user guide provides clear instructions for easily assembling the window AC support bracket Specification Item Type: Window Air Conditioner Support Bracket Material: Stainless steel Load Bearing: Approx. 75 kg / 165 lb(approx.) Function: Relieve the weight of window frames and reduce the risk of damage to window, exterior walls or sides Application: Suitable for ordinary single or double hung window with sills, usually for brick, cement and wood window sills, not hollow aluminium sills Package List 5 x Support Bracket Plate 5 x Height Pad Accessories 3 x Non Slip Pad 1 x Level Gauge 1 x Wrench 1 x Screw Pack