Glossary

Glossary terms for Steel Doors and Frames (Terms derived from SDI 134-14)

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ACTIVE DOOR (ACTIVE LEAF)
In a pair of doors, the door or doors in which the latching device is installed.
ACTUAL DOOR SIZE
The largest measured width by height of the door leaf as manufactured. Equal to the nominal door size minus design clearance. Also referred to as Net Door Size.
ADJUSTABLE BASE ANCHOR
See ADJUSTABLE FLOOR ANCHOR
ADJUSTABLE FLOOR
A metal device used to secure a frame to floor at base which allows the jamb to be positioned at a location in height above floor. Typically used at a depressed slab or unlevel floor condition. Also referred to as Adjustable Base Anchor.
ADJUSTABLE FRAME
A frame with profile in two or more pieces to accommodate various wall thickness. Also referred to as an expandable frame or split frame.
ANCHOR
A metal device provided inside of a jamb, head, sill or mullion used to secure the frame to the adjacent structure, such as wall, ceiling or floor. Also referred to as jamb anchor, wall anchor, floor anchor, etc. See listing;
APPLIED STOP
A separate surface mounted channel, typically used on a cased opening section. Creates a rabbeted frame profile.
APPLIED TRIM
A decorative piece mounted to the face of a frame or door.
ARMOR PLATE
A plate that can be of various materials and thicknesses applied to a door and /or frame externally, and can extend to the full height and width of the door. Not to be confused with ballistic resistance armor.
ASTRAGAL
A component or combination of components applied to; (a) a single door; (b) one or both doors of a pair at their meeting stiles to cover the door edge clearance; (c) the bottom edge of the flush transom panel; or ( d) the bottom of the top leaf of a dutch door. The Astragal closes the clearance gap for the purpose of ensuring privacy; minimizes the passage of light; retard the passage of air, sound, smoke or flame; and provides additional security. Provided by the hollow metal manufacturer, or the hardware supplier.
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COMPRESSION
An adjustable metal device, used to secure, adjust and square a slip on frame.
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EXISTING WALL
A hole preparation, generally in the soffit of a frame member, with internal reinforcing and/or guide for an expansion bolt, machine bolt, or screw. Used to secure the frame to an existing opening.
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FIXED FLOOR
A metal device attached to the bottom of the frame to secure a frame to the floor. Also referred to as Base Anchor or Sill Anchor.
FLAT SURFACE
A one-piece steel strip attached to one door and overlapping the other door when in the closed position.
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INTEGRAL
Either face of a door in a pair, formed at its lock edge to overlap the adjacent leaf.
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MASONRY “T”-SHAPED
A loose metal device used to secure the frame to new masonry walls.
MASONRY STRAP & STIRRUP
A fixed metal device used to secure the frame to new masonry walls
MASONRY WIRE
A loose metal device used to secure the frame to new masonry walls.
MULLION
A metal clip or angle in either 1 or 2 pieces, secured to the floor in which mullion is then positioned over.
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POURED IN PLACE
A metal device used to secure a frame to new concrete pour in place wall.
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SILL
A metal channel secured to the floor in which the sill section of a hollow metal frame is positioned over.
STEEL STUD
A metal device secured in a frame to be used for attachment to a wall built with steel studs.
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WOOD STUD
A metal device secured in a frame to be used for attachment in a wall built with wood studs.
WRAP AROUND
A formed piece of steel attached to one leaf of a pair, and overlapping the other door when in the closed position.
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