• Heavy-duty 16 gauge steel construction

(stainless steel models available on application)

• Gasket rated to 2300ºF (1260ºC) for fire tight seal
• Positive bolt pattern ensures fire-safe closure
• Back frame reinforces duct cutout
• Easy to install – No welding required
• Easy to clean
• Standard and custom sizes available
• U.L. Rated
• Available with extended 4″ (102mm) studs to accommodate fire wrap

(Add Model No. Suffix: -4)