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The THERMWELL ACBNT1 is a T-frame window air conditioner support bracket designed to hold window AC units weighing up to 100 pounds without drilling or wall penetrations. The bracket braces against the inside window frame and uses a cam adjustment mechanism to compress against the exterior wall, securing the unit firmly in place. Two support tubes bear the load of the AC unit. A powder-coated finish resists rust, and anti-vibration pads are included to reduce operational noise and movement. Installation requires no tools for assembly.
This bracket is intended for residential window air conditioner installations where drilling into the window frame or exterior wall is not permitted or practical. It accommodates wall thicknesses up to 10 inches and fits most standard window sizes. The indoor installation design keeps all hardware on the interior side, making it suitable for rental properties, apartments, or any application where preserving the integrity of the wall or frame is a priority.
Designed as a universal-fit T-frame support bracket for most standard window air conditioner units up to 100 pounds installed in single or double-hung windows.
Installation is performed by HVAC technicians or qualified service personnel. No drilling is required, but verify the window frame is structurally sound and capable of bearing the combined weight of the bracket and AC unit before installation. Ensure the cam adjustment is fully tightened and the unit is level before operating the air conditioner. Follow the manufacturer's assembly instructions and local building codes when installing window AC equipment.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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