UNIVERSAL DESIGN: Our window air conditioner bracket adapts to most window units,compatible with any brand window units 5,000 to 12,000 BTU , and supports up to 85 lbsSAFETY INDOOR INSTALLATION: Easy breezy install, all installation can be done indoors, without exterior work, just drilling into window sillRELIEVE STREE ON THE WINDOW: Transfers the stress and weight from the window sill and sash to the support and window frame for safetyINSTALLATION TIPS: The window ac bracket should be installed with a slight tilt down for condensate draining purpose, fits wall thickness from 2'' to 11'' with cement, wood and brick sills, no suitable for hollow aluminium,vinyl and plastic sills, casement windowsEasy Installation: Built-in bubble level allows easy angle adjustment, necessary hardware and instruction sheet are included in the package for your convenience Product Description Yehchi Air Conditioner Bracket Universal AC Window Support Bracket,Light Duty Support Up to 85 lbs Designed for 5,000 to 10,000 BTU A/C Units UNIVERSAL DESIGN: Our window air conditioner bracket adapts to most window units,compatible with any brand window units 5,000 to 12,000 BTU , and supports up to 85 lbs. SAFETY INDOOR INSTALLATION: Easy breezy install, all installation can be done indoors, without exterior work, just drilling into window sill. DURABLE MATERIAL: Heavy duty steel constructed epoxy-coated thick steel plate, prevent the A/C to drop out of the window. RELIEVE STREE ON THE WINDOW: Transfers the stress and weight from the window sill and sash to the support and window frame for safety. Makes air conditioner installation easier, quicker, and safer Optimize the safety of your air conditioner installation with the universal heavy-duty air conditioner support bracket Minimizes the chance of damage to the window, window parts or outside wall. Window Requirements: Window sill thickness cannot exceed 12 inchesWindow sill must be a minimum of 1 1/4 inches deep for placing baseWindow sill must be able to accept 2 1/2 inches long screwsSliding window lip or window stool cannot exceed 1 7/8 inchesCannot be used with slide casement or casement windows FEATURES: Adjustable Length Adjustable support depth, according to the needs of the window,making the bracket more stable and safe. High-density Material Solid epoxy-coated thick steel plate prevent rust and rot, matte surface prevent the A/C to drop out of the window. Block&Spacer The spacer can be adjusted on the block according to the inclination of the window sill to keep the balance of the brace so that the bracket can be installed well on window sill. Easy Installation: Step 1: Find the correct mounting position and drilling screwing holes into window sill. Step 2: Align and Mount to Sill. Step 3: Add round spacer to adjust the angle.add height with flat spacer. Step 4: Place rubber pad against exterior wall,connect leg and support body. Step 5: Final Mounting. Slightly tilt for draining condensation of moisture. Step 6: Then lock the leg and support shelf. INSTALLATION TIPS: The window ac bracket should be installed with a slight tilt down for condensate draining purpose, fits wall thickness from 2'' to 11'' with cement, wood and brick sills, no suitable for hollow aluminium,vinyl and plastic sills, casement windows.