Fire Rated Door Threshold

Bs9999 2008 recommends for fire doors with cold smoke control that the threshold gap should be either less than 3mm in height or should be fitted with a threshold seal. When speaking with manufacturers however a common statement is that a fire doors gap of up to 8 mm underneath the door is permissible. This threshold has a seal to provide protection from the elements.

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Fire rated door threshold.

A mill finish aluminum aluminum. This zero 70 high quality fire rated interlocking threshold prevents air wind and water infiltration. D dark bronze anodized aluminum. Length is custom cut to size.

It is ideal for an exterior door and is compatible with both in swing or out swing doors. Not all doors in a commercial building need to be fire rated. Metal fire doors can attain ratings up to 3 hours where wood fire doors can be rated up to 90 minutes. With a ribbed top it offers more slip resistance than smooth top thresholds.

Commercial fire rated door requirements are typically determined by the fire rating of the wall and use of the door. The threshold height can be adjusted to ensure a tight fit under a door. When nfpa 80 requires sills to have a minimum width of 4 inches some have interpreted that to mean that fire door assemblies are required to have a 4 inch wide threshold. Use it to make a transition between flooring surfaces as well as to reduce the gap between a door and the floor.

Add pemkote option to add a thermally infused anti skid coating to the threshold. Fire rated ul10c positive pressure.

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