qualward air conditioner bracket window ac support brackets - heavy duty with 2 arms, up to 180 lbs for 12000 to 24000 btu ac units qualward <b>qualward window air conditioner support bracket heavy duty support ac up to 180 lbs for 12000 btu to 24000 btu ac units</b></br></br> optimize the safety of your air conditioner installation with the universal heavy-duty air conditioner support bracket. </br></br></br> <b>features: </b></br></br> -install from inside the house</br> -takes the pressure and weight off the window sill</br> -minimizes the chance of damage to the window, window parts or outside wall</br> -solid epoxy-coated thick steel plate, matte surface prevent the a/c to drop out of the window</br> -works with any brand name window mounted air conditioner</br></br></br> <b>specifications: </b></br></br> - fits wall thickness from 3" to 15.2"</br> - 17" long a/c resting surface</br> - the support holds up to 180 pounds</br> - support a/c btu ratings of: </br> 12,000 btu-24,000 btu</br></br></br> <b>window requirements: </b></br></br> - window sill thickness cannot exceed 16 inches</br> - window sill must be a minimum of 2 inches deep</br> - window sill must be able to accept 2 1/2 inches long screws</br> - sliding window lip or window stool cannot exceed 1 7/8inches</br> - cannot be used with slide casement or casement windows</br>note: if missing parts, please contact amazon to return and refund as you may receive an used item.</br>