Did You Know? - F.Y.I.
About Metal Building Depot specialty items and features?
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Safety Drop Bottom Brackets are available that will stop the door from falling in the unlikely event of cable failure. These safety drop bottom brackets 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: Certain regions
of the country, especially coastal areas, have building code requirements
that call for doors to withstand higher windloads. Metal Building Depot has doors
to accommodate a variety of different windload requirements. These
doors are listed with SBBCI, Texas Department of Insurance, Dade
County Florida windload and others.
Pass Door: For sectional doors that have a lot of pedestrian traffic, a pass door option is available on some models. The pass door allows for pedestrian travel through the door while the sectional door is closed, without raising and lowering it.
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Full vision aluminum sections are available on most models and painted to match the color of the door. These sections are available with numerous glass and plexiglass options. |
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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 (2) two or more doors to fill one opening. |
Insulation: To SAVE energy, many sectional doors are equipped with insulation, with R-Values up to 17.2 calculated,
7.57 tested (installed).
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R-Value
Chart |
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Thickness |
R-Value |
Insulated |
2" |
7.1 |
Sandwich
Polystyrene |
1
3/8 " |
6.5 |
Sandwich
Polystyrene |
2.0" |
9.0 |
Sandwich
Polystyrene |
3.0" |
13.2 |
Sandwich
Polyurethane |
1 1/2" |
12.9 |
Sandwich
Polyurethane |
1 3/4" |
15.05 |
Sandwich
Polyurethane |
2" |
17.2 |
Section reinforcement: Larger size doors may require additional reinforcing struts to add strength to the door.
Window lites available: For visibility without going to a full vision aluminum section, sectional doors are available with window lites of various sizes. Sizes available are 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 Metal Building Depot raised panel doors.
Outside keyed locks are available. Interlock switches should be used if doors are specified with a keyed lock and an electric opener. Additional reinforcement may be required on the top section of the door for trolley-type operator. 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 opening.
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Break-away bottom section: For areas of high traffic and the possibility of the door being struck, a break away bottom section is available. This section can be hit and reset in seconds maintaining the function of the door 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 and economical and efficient means to identify or advertise a business.
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