508187-01
Issue 2116
Page 11 of 51
ACCESSORIES
Accessory
Catalog Number
Return Air Base
Return Air Base 14.5”
68W61
Return Air Base 17.5”
68W62
Return Air Base 21.0”
68W62
High Altitude Pressure Switches
2-Stage 80% UH/DF (4501 - 7500 ft) [045, 070, 090 110]
91W53
2-Stage 80% UH/DF (7501 - 10,000 ft) [045, 070, 090 110]
73W35
High Altitude Orifice Kits (7500 ft+)
2-Stage 80% UH/DF - Natural Gas
51W01
2-Stage 80% UH/DF - Propane Gas
11K47
Natural to LP Kits
2-Stage 80% UH/DF (0 - 7500 ft)
11K48
2-Stage 80% UH/DF (7501 - 10,000 ft)
11K47
LP to Natural Kits
2-Stage 80% UH/DF
77W10
Downflow Specific Air Filters
14.5"
51W06
17.5"
51W07
Downflow Combustible Flooring Base
14.5"
11M59
17.5"
11M60
Night Service Kits
2-Stage
22J94
Horizontal Suspension Kit
80% & 90%
51W10
External Filter Rack Kits
1 pack (16 x 25)
1.841018
10 pack (16 x 25)
1.841039
Twinning Kit
Constant Torque Gas Furnace Twinning Kit
16W72
For vent length and clearances to combustibles, please reference installation instructions.