No-Drill Window AC Support Bracket, Heavy-Duty AC Window Bracket Supports Up to 350lbs for 5,000-24,000 BTU AC Units, Adjustable Air Conditioner Support Bracket for Single/Double-Hung Windows

Install your window air conditioner without drilling or wall damage. This adjustable, heavy-duty steel bracket assembles from inside the room and provides a stable, level base for most 5,000–24,000 BTU units. The reinforced frame supports up to 220 lb, while the powder-coated finish resists corrosion for long service life. A wide 31.5"–41.7" adjustment range fits both single-hung and double-hung windows, and the triangular support design improves load distribution for a safer fit. Non-slip pads and anti-shake fasteners protect your window sill and reduce vibration, helping your A/C run more quietly. All required hardware is included, so you can complete installation quickly and confidently—no exterior work or drilling required.

• No drilling, no wall damage: Hassle-free setup from inside the room—no holes in the sill or exterior. All hardware included with clear instructions for a fast, tool-light installation.
• Heavy-duty load capacity: Reinforced steel frame and powder-coat finish safely support up to 350 lbs. Compatible with most 5,000–24,000 BTU window air conditioners.
• Wide, precise adjustability: Sliding arms fit window openings from 31.5" to 41.7", delivering a level, stable platform for both single-hung and double-hung windows.
• Safer, quieter performance: Non-slip rubber pads and anti-shake fasteners reduce vibration, protect your sill, and keep the unit secure during operation and weather changes.
• Built to last: Corrosion-resistant coating resists rust from rain and sun; triangular support geometry enhances stability for long-term use in homes, offices, and garages.