Airtight Loft Hatch | Part L Compliant U Value as low as 0.15
TIMCO 1168 Timloc Plastic Push Up Loft Access Door - 562 x 665 - White : Amazon.co.uk: DIY & Tools
Manthorpe GL250-035-EPS Plastic Drop Down Loft Hatch & Surround; Multi Point Catch; White (WH); Fits 553 - 562 x 726mm Opening 545 x 715mm Clear Access; 110mm Expanded Polystyrene (UV 0.35) - Kirby and Wells