Construction: All solid-core doors contain an expanded polystyrene core and are faced on each side with 0.063" satin anodized aluminum riveted to an extruded aluminum frame for an overall door thickness of 1-1 / 4". Door edge clearances are: top 1 / 2", bottom 1 / 2", vertical edges 3 / 16". Doors may be mounted in wood or metal frames (1 / 4" reinforcement is recommended on hollow metal frames).
Type 4 - Gravity hinges are attached to the door with thru-bolts which allow for easy maintenance or replacement. Gentle closing action is activated by a roller cradle assembly at the top of the door and an offset pivot at the bottom of the door. Type 4 doors are not recommended for drafty areas due to the lack of positive closing and holding pressure.
Type 4A - Spring butt hinges are attached directly to the extruded aluminum frame with sheet metal screws and factory-drilled pilot holes. Spring butt hinges provide adjustable positive closing force ideal for applications requiring rapid closure. The positive spring pressure will also maintain doors in the closed position under drafty conditions or where a pressure differential exists.
If you are interested in any of our products, email sales@carlsonproducts.com.
|