TJW Wall Inlet Size:43.75" x 23.5" A hard rubber weatherproof seal

A hard rubber weatherproof seal above the nest boxes keeps water out

ornamental grasses

and off positions

A removable wing nut makes disassembly and cleaning simple

TJW Wall Inlet Size:43.75" x 23.5" A hard rubber weatherproof sealDesigned to open from the top instead of the bottom, TJW Wall Inlets direct airflow toward the ceiling. Features Advantages: Each blade has an adjustable counterweight for balancing multiple inlets at different static pressures; adjust each blade for lower or higher static pressure When fans stop, the counterweight closes the louver blades Translucent counterbalance louvers allow more light into rooms Engineered to open at 0. 05 to 0. 07 static