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FIREPLUG LETTERBOX PROTECTION
 
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FIREPLUG INTUMESCENT LETTERBOX LINER & ASSEMBLY
 
Fireplug Letterbox Protection
 
Fireplug Letterbox Liner (ref. FLL) are made from Firefly 101/102 intumescent material and are encapsulated in foil to achieve a high degree of protection from mechanical and chemical damage.
Fireplug FLL consists of two L shaped intumescent inserts both 300 mm long and 40 mm wide with a hinged piece 50 mm x 40 mm at one end. Double sided tape located along one face of the liner acts as a hinge and to affix the insert into the letter opening of the door (see diagram above).
Fireplug Letterbox Assembly (ref. FLA) consists of a FLL plus a metal front and back plate (see 1 & 3 on the diagram above.
The Fireplug Letterbox Assembly front and back letter plates are available in white, bronze, satin anodised aluminium and gold anodised aluminium. Each front letter plate is spring loaded. All fixings are supplied.
 
Fireplug FLL are suitable for letter openings up to 60 mm deep.
Under the action of heat the intumescent expands filling the hole in the door through which the fire and toxic gasses could pass. The metal front and back plates act as a cold smoke seal, delaying the passage of smoke before expansion of the intumescent.
 
Fireplug FLL and FLA have been tested to British Standard BS476: Part 22: 1987 by Chiltern International Fire Ltd. on 19th March 1997, test no. FER/F97023. A test result in excess of 30 minutes was achieved. Full test report available on request.
Fireplug FLL are easily installed using a sharp knife. Measure the size of the opening (length and height), simply cut each insert to size, remove backing from adhesive tape and press firmly into the opening in the door. Position FLL centrally within opening. The metal front and back plate can now be fixed in the usual way.
 
Fireplug FLL and FLA are designed to maintain the integrity of 1/2 hour doors that require a letter opening e.g. in flats.

Care must be taken with letter box liners that the door is of solid construction in the core. If the core is of a hollow construction, a full letter box assembly must be installed rather than just the liner.
 
Letterbox Liner
 
Fireplug FLL are easily installed using a sharp knife. Measure the size of the opening (length and height), simply cut each insert to size, remove backing from adhesive tape and press firmly into the opening in the door. Position FLL centrally within opening. The metal front and back plate can now be fixed in the usual way.
Letterbox Liner
 
To ask questions or receive information about Fireplug Letterbox Protection, please use the form below.
 
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Enter this code: 8765
 
 
 
Complete Fire Protection Ltd. Unit 2, Ferry Steps Industrial Eastate, Albert Road
St Philips, Bristol BS2 0XW Tel 0117 971 1917 Fax 0117 971 1727
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