Under-the-Floor Kit

For use with Any Manufactures Commercial Pedestrian Automatic Low/High Energy Swing Door Operator

Under-the-Floor (4400-U )

Our 4400-U Under the Floor Series is designed to perform with the installation of NEW O.E.M. automatic door operators and controls as supplied by the specified manufacture and/or distributors. This product is not designed for the use and conversion of existing, previously installed, remanufactured or rebuilt overhead automatic door operators. The 4400-U mounts under the floor, directly below the door and acts as the lower portion door pivot, closer and operator. We use three sealed shaft flange bearings and one thrust bearing allowing our standard 4400-U to support doors weighing up to 1000 lbs. This design is used when structural restrictions prevent the operator from being mounted in the floor, yet there is another floor, basement or parking structure below the door opening. This design requires a 2” cored hole through the floor to the floor below at the pivot centerline. It also requires ceiling access from the floor below.

Sample Drawings

4440-U Under-the-Floor Series


Note: Drawings found on this website are generic and not to be used for fabrication. Each project generally requires specific details and dimensions. Shop drawings specific to your project are available through our shop drawing services.

Douglas Lingner
Professional Shop Drawing Services