1,circular Pressure relief ports 2,balance windows 3,Body - All metal parts are aluminum

Pressure Ventilator:

Specifications

MATERIAL:

Body - All metal parts are aluminum. Internal Sleeve -self-extinguishing Lexan.

UL LISTING:

File No. E57306

COVER PLATES:

6-1/4" (165.1mm) diameter round aluminum cover plate or square stainless steel or aluminum cover plate.

LENGTH:

Standard for 4" (101.6mm) wall thickness; other lengths available. Specify exact wall thickness; we will convert to our part number..

MOUNTING:

.May be mounted through wall or ceiling. Drilled for No. 8 (4.0mm) screws.

The function of this ventilator is to keep the inside and outside pressure to be balanceable,

Balance Window(YL-110) is Circular