Measuring Instructions

1. Measure outer perimeter of the ALUMINUM flange area of ceiling shutter.

2. Specify hanging-rail of cover to be either "A" or "B" as shown in plan view. Note: When

determining hanging rail dimension, take into consideration that your cover will need to swing

from rail a full 90 degrees to 'Open Position' without any obstruction in travel area (such as light

fixture or picture on wall). See illustrations 2 and 3 below.

This cover was designed to attach directly to the ALUMINUM flange area of ceiling shutters, but

can easily be adapted to any opening in ceiling or wall effectively if you have a surrounding flat surface with a minimum of 1-3/8" around opening to be covered.* (1-3/8" is the flat flange area it takes to compress both vinyl seals that are splinned to the cover flange. It takes a minimum of 1"

to compress the first vinyl seal from the outside flange edge of insulating cover.)

*ADAPTATIONS

IF CEILING SHUTTER DOES NOT HAVE 1-3/8" FLAT FLANGE AREA, it is recommended that this be accomplished by using some form of shim or attaching a facing around shutter prior to measuring for cover.

IF WOOD FACING IS ATTACHED AROUND CEILING SHUTTERS, such as 1" x 4", make sure wood miters fit together air-tight and the facing seals to the ceiling are air-tight. Caulking miters

and facing to ceiling can help accomplish this. Most effective installation of cover will be accomplished by measuring inner opening edges of facing and adding 4" to these dimensions to get cover size. This allows cover to be attached directly to wood facing, gives a 2" flat surface for cover to seal to and lets the screws for attaching hanging-rail and locks be far enough from wood edge so as not to split wood facing.