About WhisperKOOL Through Wall Room to Room Fan

The ThruWall™ Room to Room Fan balances temperatures in adjoining rooms by transfering warm air out of exhaust room quietly and efficiently. 
Simple to install in any frame wall from 3-1/2" to 6-3/4" thick. A high quality Thermally Protected motor with balanced fan blade moves up to 200 CFM. Move heated or cooled air between rooms.

Key Features:

• Operates quietly and efficiently for year round comfort
• 10' long power cord
• 2 speeds: 160 CFM on low and 200 CFM on high speed
• The ThruWall's telescoping housing installs inframe walls from 3½" to 6½" thick
• Hole Diameter: 8 inches
• Grille Diameter 9 3/4 inches
• dBA - High-55 Low-49
• Weight 5 lbs
• Amps .75
• Easy to install