RABOX-2025 – RETURN AIR BOX – DUCT BOARD TOP

A return air box mounts behind a return grille and connects it to round ductwork. This one has a ductboard top so you can cut the round opening on-site to match your duct size. The 20×25 is one of the most common return sizes in residential HVAC. Internally insulated to reduce noise and condensation.

Specs: 20″ x 25″ return grille opening, ductboard top (cut to fit), galvanized steel, internally insulated

Replaces: 670R620254

Fits: Standard 20×25 return air grilles. Ductboard top accepts any round duct size once cut to fit.

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:

• 670R620254

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.