49-Economy_intumescent_letterflap

Intumescent Letter Box Units

A range of intumescent letter boxes to provide fire, smoke, weather and draught protection. (PRODUCT 49)

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REF: PRODUCT 49
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  • Description
  • APPLICATION INSTRUCTIONS
  • DOWNLOADS
  • ORDER REFERENCES

Product Description

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An intumescent fire & smoke protection letterbox system comprising a front plate with a spring loaded flap which can be also used on the inside of the door, an internal intumescent liner is supplied to fit in the aperture. For the internal side, a flap with a security hood can be supplied as an alternative option. There are three sizes available to fit doors from 36mm to 70mm thick.

 

ADVANTAGES

  • Provides up to 68 minutes protection- Can be installed on either side of a wide range of doors
  • A security hood or lockable letter plate can be supplied as internal alternatives to fit to the door
  • Economy letter box is ready to install in mail apertures, replacing the existing standard letter flap

 

FIRE TEST PERFORMANCE

Tested to BS476 Part 22 1987, built into a composite door, maintaining the integrity of the door for 61 minutes.

Tested to European Standard EN1634-1 (2000), achieving 68 minutes protection.

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APPLICATION INSTRUCTIONS

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Insert the Letter Box Unit into the hole and fix with screws supplied; insert the liner to finish and then fix with double sided tape and pins supplied.

For Internal Flaps / Security Hoods, align with the external flap and fix with screws supplied.

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DOWNLOADS

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Please use the links below to download relevant information as PDF documents:

 

Technical Information

TDS049-04-2014

TDS050-Intumescent-liner-04-2014

 

Application Instructions

AP049-04-2014

AP050-Intumescent-liner-04-2014

 

COSHH Data

HS049-04-2014

HS050-Intumescent-liner-04-2014

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ORDER REFERENCES

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TYPE HOLE SIZE OVERALL SIZE
L1 – L4 50 x 267mm 75 x 315mm
L6 – L8 69 x 290mm 100 x 335mm

 

Option A: Front smoke frame and flap + intumescent liner.

Option B: Front smoke frame and flap + intumescent liner + rear smoke frame and flap.

Option C: Front smoke frame and flap + intumescent liner + security hood (standard security hoods are black)

 

product-49-diagram

 

COLOUR REF REF REF
Brown L1A L1B L1C
White L2A L2B L2C
Stainless L3A L3B L3C
Brass L4A L4B L4C
Coloured L6A L6B L6C
Stainless L7A L7B L7C
Brass L8A L8B L8C

Special BS and RAL colours made to order at an extra charge.

 

LOCKABLE LETTER PLATE 

REF
LLP1 White 260mm x 40mm 310mm x 70mm
LLP2 White 275mm x 60mm 335mm x 100mm

 

LOCKABLE LETTER PLATE (WITH KEY HOLDER)

REF
LLP3 White 260mm x 40mm 310mm x 70mm
LLP4 White 275mm x 60mm 335mm x 100mm

 

NEW LETTER BOX UNIT Complete with intumescent liner. Overall size 76mm x 310mm, deep to suit door sizes 38-60mm.

REF  
LP/BC Bright Chrome
LP/SC Satin Chrome
LP/BRS Brass
LP/WH White

 

INTERNAL SMOKE FLAP only, consists of a 10mm deep metal surround, with a metal flap, housing a smoke and draught seal to suit hole size 267 x 50mm. These are made in the standard colours shown below.

REF
SM/S Black/Brown/White
SM/S Stainless steel (brushed with black surround)
SM/S Brass
SM/LIN Intumescent liner

 

ECONOMY LETTERBOX WITH INTUMESCENT LINER

REF COLOUR APERTURE SIZE EXTERNAL SIZE                                                        
LPB/C Chrome 250mm x 35mm 300mm x 67mm
LPB/SC Satin Chrome 250mm x 35mm 300mm x 67mm
LPB/G Gold 250mm x 35mm 300mm x 67mm
LPB/B Black 250mm x 35mm 300mm x 67mm
LPB/W White 250mm x 35mm 300mm x 67mm

 

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