Model HDO3 : This unit is for installation through a wall with maximum thickness of 9 inches. Electrical conduit and blower hose comes standard at a 3′ length between wall nozzle and mounting location of blower.
Model HDO3S : This unit is the same style as the HDO3 however it is for installation through a wall with a maximum thickness of 5 inches. Electrical conduit and blower hose comes standard at a 2′ length between wall nozzle and mounting location of blower.
Model HDO4: This unit is designed for mounting on a wall where there is no janitor closet or plumbing chase on the other side. It is used primarily for applications where the backside of mounting wall is the exterior of structure. The blower hose and conduit run up through the open cells of block wall. This allows the blower motor to be installed in the ceiling/overhead.
HDO3 model can be configured for walls thicker than 9″ at an additional charge. Please call if your install requires custom lengths of the nozzle/pushrod to timer box assembly.
HDO3 , HDO3S and HDO4 models are available with up to 12′ hose/conduit for remote blower locations such as an overhead. This is used when there is not enough room in the plumbing chase or janitors closet to mount the blower behind wall.