Standard Construction
Frame: Molded fiberglass channel with FRP blade stop.
Blades: Fiberglass.
Axles: Full length 316 SST.
Bearings: Molded, graphite filled PTFE sleeve bearings.
Counterweight assembly: 316 SST arm with 316 SST weights to be positioned and secured in field for sizes greater than 12" (305).
Sizes (diameters): 6" (152), 7" (178), 8" (203), 9" (229), 10" (254), 12" (305), 14" (356), 16" (406), 18" (457), 20" (508), 22" (559), 24" (610), 26" (660), 28" (711), 30" (762), 32" (813), 36" (914), 42" (1067), 48" (1219)
Ratings
Leakage Performance with Blade Seals Preventing Backflow:
12" Ø (305): 28 cfm @ 1" wg
24" Ø (610): 46 cfm @ 1" wg
36" Ø (914): 52 cfm @ 1" wg
48" Ø (1219): 65 cfm @ 1" wg
Temperature: -20oF to 200oF (-28oC to 94oC)