Selkirk 8 in. D Galvanized Steel Wall Thimble

The insulated wall thimble installs quickly and eliminates the need for using individual fire stops. Interior plate has black matte finish. The round shielding acts as a radiation shield and provides

Color: Black Insulated: Yes Diameter: 8 in. Opening Required: 14-1/8 inch x 14-1/8 inch Number: 8T-WT Maximum Temperature: 2100 deg. F Gauge: 22 Ga. Maximum Continuous Temperature: 1000 BTU/hr. UL Listed: Yes Vent Type: Type A Product Type: Wall Thimble Material: Galvanized Steel Diameter: 22 in. Brand Name: Selkirk