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AT35 Airtight Loft Hatch | 640x560mm | Hinged

From £32.80 (ex. VAT) (ex. VAT)
( £39.36 (inc. VAT) inc. VAT)
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  • Airtight at 600Pa air pressure (both positive & negative)
  • Easy to fit and easy to open with hinge down movement
  • Patent application no. 1407745.7
  • The neatest on the market, protrudes just 2mm from ceiling when fitted
  • Fits a minimum structural opening of 640x560mm
  • Clear opening when fitted 538x520mm (meets NHBC guidelines)
  • Smooth powdercoated zintec steel in industry std satin RAL9010 off-white
  • Environmentally friendly (made from 80% recycled steel) GWP and ODP ratings of zero

Why an airtight loft hatch?

The AT35 loft hatch is the first air tight loft hatch of its kind. Insulated to meet Part L of the building regulations the AT35 is airtight in both positive and negative air pressures at 50Pa. This hatch is designed specifically to meet the stringent demands new properties are subjected to ensure they are as airtight and well insulated as possible. The air permeability test is based on BS EN 1026:2000 and BS EN 12207:2000 for a ceiling use only.

Easy to fit

Fitting is a doddle, just screw fix through the pre-drilled holes in the frame into the surrounding joists. The spring loaded twist catch lock ensures a high compression seal between the door and the frame. The outer frame is also fitted with a seal to ensure air cannot easily escape from around the outer edge of the hatch.


This steel loft trap protrudes just 2mm from the ceiling when fitted. You'll also notice its lovely clean lines and smooth finish it's the neatest loft hatch on the market.  Let's face it does anybody really want a great unsightly lump of plastic protruding from their ceiling?

Insulation - 65mm of foam insulation bonded to the inside of the lid

Product dimensions

Fits a ceiling opening of 640x560mm
Clear opening once installed 538x520mm
Frame around lid: 25mm (all sides)
Depth 65mm
Protrudes just 2mm from ceiling when fitted
Hinged on the 560mm side


Standard: Twist lock with a tri-drive lock body
Optional: key lock available (at extra cost) Please note pole not suitable for use with this option


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