Optoma HD21 Replacement Projector Lamp With Original Osram Bulb and HousingHD21 Optoma Projector Lamp Replacement. Projector Lamp Assembly with High Quality Genuine Original Osram P VIP Bulb inside.

Includes: Proof of Closure Switch and Auxiliary Switch

Operating range 100–240°F with a maximum rating of 150°F

Operating at 25 Volt AC

Wiring: #6-32 screw terminals with cup washers

Temperature Rating: Open 155°F

the PCBAG123S works with APG10240451A

fail-safe damper control

and 3 ft plenum cable with 1/2" conduit

Precise air pressure sensing/reading for safe ignition and efficient combustion

helping prevent unburned fuel release and unwanted downtime

Dimensions: Inner diameter 1-1/8 in

OEM-equivalent replacement part for Heil Quaker/ICP furnaces