Fangrui Product Details [shock-absorbing And Non-slip Air Conditioner Stand]:window Air Conditioner Mounting Support Bracket Can Relieves Weight Stress On Your Window Frame A Properly Installed Air Conditioner Window Bracket Minimize The Risk Of Damage To Your Window, Exterior Wall Or Siding With The Universal Window Air Conditioner Support Bracket. [adjustable Leg]:the Unique Design Of The Leg Extender Allows You To Freely Adjust The Length Of The Support Arm , Which Well Adapted To The Different Outside Wall, Relieved Weight Stress On Window Frame [diy Window Ac Support Bracket]:window Ac Mounting Bracket Works On Most Single- And Double-hung Windows (the Kind That Slide Up And Down), Not Every A/c Fits Every Type Of Window. Determine Whether Your Window Is Sliding, [a/c Safe Air Conditioner Support Bracket]indoor Installation,this Diy Window Ac Support Bracket Easy Installation, No External Work Required, The Entire Installation Can Be Completed Indoors, Need To Drill 3 Holes In The Window Sill, Please Check If The Homeowner