Products / GAF Master Flow Chimney Caps (Fixed Size)
GAF Master Flow Chimney Caps (Fixed Size)
Master Flow Chimney Caps (Fixed Size) are GAF's galvanized steel safety caps for chimneys with an epoxy powder finish and a single-piece, heavy-gauge hood, meant to help protect against weather infiltration, downdrafts, clogging and animal infestation. Models CC99, CC913 and CC1313 (nominal 9 x 9, 9 x 13 and 13 x 13 in.) fit flue tiles from 7-1/2 x 7-1/2 in. to 13-1/2 x 13-1/2 in. outer dimensions. GAF says they meet most fire codes and advises consulting local fire codes, and gives a 4-year limited warranty under the Master Flow Ventilation Products Limited Warranty.
Sources
- gaf.com verified 2026-09-25