
DFP2025 – FILTER PLENUM (DOOR ON 20″)
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
A filter plenum is a sheet metal box that connects to your furnace, air handler, or cased coil and gives you a spot to install a return air filter. This version has the filter access door on the 20″ side — make sure to measure your installation so the door faces an accessible direction. Accepts up to a 4″ media filter and is internally insulated with R-6 liner.
Specs: 20″ x 25″ filter opening, filter door on 20″ side, 30″ length, R-6 internal insulation, accepts filters up to 4″ thick, galvanized steel
Replaces: 046R62025, DFP202530R6-1-1
Fits: Universal — connects to any furnace, cased coil, or air handler with a matching opening
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
Cross-reference numbers
This part replaces the following OEM and aftermarket numbers:
- 046R62025
Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.
Fits these models
- DFP202530R6-1-1



