Product Details
The Kidde KI-SB4 is a Standard Detector Mounting Base with 4" Trim Skirt.
Compatible for use with Kidde VS and VM series FACPs.
KI Series detector bases mount to North American 1-gang boxes, 3-1/2 inch or 4 inch octagon boxes, and to 4 inch square electrical boxes 1-1/2 inches (38 mm) deep