The steel return air grille is not completely flat. The front service is around ~0.4 inches from the wall, where it covers the opening of the duct.
We've got a massive range of return air grilles, which you can browse here.
The steel return air grille is not completely flat. The front service is around ~0.4 inches from the wall, where it covers the opening of the duct.
We've got a massive range of return air grilles, which you can browse here.