The type of door seam is an important element in the door construction. When selecting it, you should consider the following aspects:
- Building type;
- Frequency level;
- Abuse level;
- Security level.
Openings in high frequency, high abuse or high security areas require a full flush continuously welded door. Since the edge of the door is reinforced and continuously welded, a door that is fully continuously welded is stronger than a standard lock seam on edge door. A lock seam on edge door is only spot welded at the top and the bottom of the door edge, without edge reinforcements.
The term “full flush” means there is no visible seam on the face of the door. A vertical seam may be permitted on the door edges if the door is not qualified as a seamless door. A seamless door has no visible seams on the vertical edges, for more esthetic value.
Also, the door should have been tested per the physical endurance standard ANSI A250.4: Test Procedure and Acceptance Criteria for — Physical Endurance for Steel Doors, Frames and Frame Anchors. A series of cycle and twist test are performed to verify the strength of the door. Level A (1 000 000 cycles) is recommended for extra heavy duty applications, Level B (500 000 cycles) is recommended for heavy duty applications and Level C (250 000 cycles) is recommended for standard duty applications.
The seam is filled with industrial adhesive then filled and ground smooth (PAF)
Active door edges are beveled on both sides, while inactive door edges are square on the strike stile and beveled on the hinge stile. Rounded (radius) edges are provided for double-acting doors. We can also provide edges to meet your unique specifications.
87-degree angle to the door face (1/8" (3.2 mm) in 2" (50.8 mm))
Standard on active door or single leaf door.
90-degree angle to the door face
Standard on strike edge of inactive door and hinge edge of door with continuous hinge
End channels provide a seal for the top and bottom of the door. The choice of end channel depends on hardware preparation, risk of contraband, and door location
16-gauge (0.056"/1.4 mm) or 14-gauge (0.071"/1.8 mm)
16-gauge (0.056″/1.4 mm), 14-gauge (0.071″/1.8 mm) or 12-gauge (0.105″/ 2.7 mm), not sealed.
16-gauge (0.056″/1.4 mm), 14-gauge (0.071″/1.8 mm) or 12-gauge (0.105″/ 2.7 mm)
Flush internal steel channels, 16-gauge (0.056"/1.4 mm) or 14-gauge (0.071"/1.8mm). Stainless steel only.
Hardware reinforcements options
16-gauge (0.105"/2.7 mm) lock front, 18-gauge (0.044"/1.1 mm) spacer
*12-gauge equivalent, as per ANSI A250.6 section 1.3.1 on equivalent treads rendered in a lighter gauge with pierced and dimpled hole.
Vision kits and louvers option
We offer various vision kit models; the most popular is the sandwich-type. The two welded components straddle each side of the door and represent an affordable, esthetically pleasing option. Vision kits flush with the door’s surface are preferable for use in areas where security or hygiene is a priority.
Louvers permit the circulation of air through the door. They should be used with caution in order to respect building codes and fire-rating standards. We offer one standard louver model but have access to many others via our supplier.
Inverted "Y" blades, welded corners, 50% free-flow area, 18-gauge (0.044"/1.1 mm). Available in CRS, A40, A60 material and fire rated
18-gauge (0.044"/1.1 mm). Available for 1/4" (6.3 mm) to 1" (25.4 mm) thick glass (SK series)
18-gauge (0.044"/1.1 mm). Only available non-rated and for 1/4" (6.3 mm) and 1/2" (13 mm) thick glass.
16-gauge (0.056"/1.4 mm). Spot welded, available for 1/4" (6.3 mm) to 1" (25.4 mm) thick glass (P series)