- Model GWM078 flapper
- Model GWM088 screen
- Model GWM098 flapper & screen
• With and without back-draft flapper
• With and without 1/4″ x 1/4″ screens mechanically inserted and removable
• No tailpipe, with 6″ tailpipe or with 11″ tailpipe.
• 26 Gauge Galvanized
• Riveted, not caulked
• Mouth opening exceeds pipe area
• 4 mounting holes for secure connections
Made in the USA by Builder’s Best, Inc.