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.
Fire door threshold smoke seal.
The ul 1784 test standard states in order to obtain information on the extent of air leakage at the ungasketed bottom gap of a test sample an artificial seal.
A range of versatile hardwearing door bottom seals that seal the gap between the bottom of the door the floor.
Impervious to fungus and mildew.
When speaking with manufacturers however a common statement is that a fire doors gap of up to 8 mm underneath the door is permissible.
Seals against smoke fire air sound and weather.
National guard products based in memphis and founded in 1935 is a privately held life safety products company serving the commercial construction market.
A door sweep or bottom seal is not a required.
The gaskets must be fire listed and approved for use in a smoke and draft control assembly.
Use with a threshold plate for the optimum sealing solution.
Threshold fitted with a black 60 minute 20 x 4mm intumescent fire smoke seal nhbc type approved full details 4 7 out of 5 stars.
In this case the door requires a threshold seal to ensure it can withstand and protect against smoke and flames in the event of a fire.
A gasket is required to provide a seal where the door meets the stop at the top and on both sides.
Thresholds are rarely mandated by the codes and standards for fire doors or smoke doors but when they are used in these applications thresholds must be listed to ul 10c or nfpa 252.
Hss2000xs88 is furnished in three cut lengths equivalent to standard door dize dimensions i e.
99 of ngp products are made in the usa and ngp s broad portfolio includes smoke seals automatic door bottoms thresholds fire rated vision kits fire and impact rated glazing fire rated continuous geared hinges.
The fire smoke seal can be removed and replaced.
Ideal for use in apartments schools hotels and public buildings where smoke seals draught excluders.
They can be surface mounted or concealed in a rebated groove at the bottom of the door leaf.
If a fire door has a gap of 5mm along the bottom its integrity is compromised and it allows fire and smoke to pass through and spread.
Also available with 60 minute 20mm x 4mm fire smoke seal 04cp803 fs60.
Longest lasting commercial grade door seal.
Read reviews for stormguard fs60 fire and smoke threshold 914mm aluminium.
The fire smoke seal has passed at bs476 part 22 and 31 1.
Smoke gaskets on fire doors must meet smoke and draft control requirements.
Unaffected by sunlight ozone and ultraviolet rays.
