floor flange

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key plate, escutcheon, 1
1. A protective plate surrounding the keyhole of a door, a light switch, etc.; also called a scutcheon.
2. A flange on a pipe, used to cover a hole in a floor through which the pipe passes.
3. A protective or ornamental cover at the termination of a post, picket, or rail against a tread, floor, or wall.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
This piece has a 3/4-inch floor flange centered and attached on its outer side.
Two floor flanges on the outside of the yoke carry 3-inch-long pipe nipples inserted through the holes in the support arms.
After I disconnected the toilet and moved it out of the room, I stuffed a rag into the toilet floor flange to keep out the sewer gases.