MetalBuildingDepot.com offers a wide range of specialty door items and features to accommodate your custom building design.
Safety-Drop Bottom Brackets
Safety-drop bottom brackets will stop the door from falling in the unlikely event of cable failure. They are available for high-lift and vertical-lift doors with either 2" or 3" track. (Not available for low headroom applications and not recommended for standard lift applications.)
High Wind Resistance Doors
Certain regions, especially coastal areas, have building code requirements for doors with higher windload factors. Our door options can accommodate a range of windload requirements. These doors are listed with SBBCI, Texas Department of Insurance, Dade County Florida and others.
Pass Door
For some sectional doors with a lot of pedestrian traffic, the pass door provides a means of entry while the sectional door is closed. Please ask us which sectional door models can accommodate a pass door option.
Full-Vision Aluminum Sections
Full-vision aluminum sections that match the door color are available on most door models. We offer several glass and plexiglass options.
Removable Center Mullions
For openings that are wider than standard door width, consider using a carry-away (or roll-away) or swing-up mullion that enables the use of two or more doors to fill one opening.
Insulation
To save energy, sectional doors often include insulation with R-Values up to 17.2 calculated, 7.57 tested (installed).
Section Reinforcement
Larger doors may require additional reinforcing struts for added strength.
Sections
Steel panels reinforced with stiles interconnected with hinges and rollers.
Window Lites
For visibility without going to a full-vision aluminum section, sectional doors with window lites of various sizes are available: 24" x 6" and 24" x 12" for ribbed steel doors; 24" x 8", 28" x 14" and 40" x 14" for polystyrene sandwich products; 24" x 8", 24" x 12" for polyurethane sandwich products; and 20" x 12" for raised-panel doors.
Outside Keyed Locks
Doors with a keyed lock and an electric opener should include interlock switches. Additional reinforcement may be required on the top section of the door for trolley-type operation. As a general rule, doors for openings with wood jambs should be the same width as the opening. Doors for openings with steel jambs should be 2" wider than the opening.
Break-Away Bottom Section
For high-traffic areas where the door is susceptible to being struck, a break-away bottom section is available. If the section is hit it can be reset in seconds, maintaining the door function and the integrity of the building.
Create-a-Sign Full Vision
Where space is an issue and a sectional door has road frontage, the create-a-sign full-vision section provides an economical and efficient way to identify or advertise a business.
Torsion Springs
Provides the means to raise and lower the door via cable winding on drums.
Cable Drum
Grooved drums on the torsion spring shaft that lifting cables wind around when door is opening.
Extension
Extends along both horizontal tracks.
Track
Tracks act as a guide for raising and lowering the door.
Track Types
Standard
Low Headroom
High Lift
Vertical Lift
Track Components
Vertical Track – on either side of opening
Horizontal Track – attached to ceiling
Radius – curved track
Standard Track Heights:
7’ high – 4 sections high
8’ high – 5 sections high
Gauge
Gauge is the thickness of the steel. Lower is thicker: 24-gauge is thicker than 25-gauge.