Hide Show Product DetailsMountWallUsed With1670F, 1671F, 1688F, 1689FDescriptionHousing pack for 1670F, 1671F, 1688F and 1689F (damper/plastic duct connector included). Fits 2"x4" ceiling or wall construction.1667HBroan-NuToneBroanNuTone Customer Reviews Hide Show Write a Review