AMERICAN METAL 1800B8 ROUND DAMPER RING, STEEL, BROWN, 8-IN.

AMERICAN METAL 1800B8 - ROUND DAMPER RING, STEEL, BROWN, 8-IN. - 8", BROWN ROUND DAMPER RING, ALL STEEL CONSTRUCTION, KNOB OPERATED WORM GEAR, USE WITH ROUND DIFFUSER #1500W8. AMERIFLOW GRILLES, REGISTERS AND DIFFUSERS OFFER QUALITY MATERIAL, SKILLED WORKMANSHIP AND SOUND ENGINEERING. FOR HEATING AND AIR CONDITIONING SYSTEMS IN RESIDENTIAL AND LIGHT COMMERCIAL APPLICATIONS, FOR NEW CONSTRUCTIONS AND REMODELING. AMERIFLOW PRODUCTS ARE QUALITY-BUILT WITH THE CONTRACTOR IN MIND. KNOB-OPERATED WORM GEAR ADJUSTS PATENTED BUTTERFLY VALVE ONLY 2-1/2 TURNS TO FULL OPEN OR CLOSE CONTROLS VOLUME - NOT AIR PATTERN MINIMUM AIR RESTRICTION GALVANIZED & PAINTED STEEL DAM - EQUAL TO 852319