Home > Companies > Bilco UK Ltd > Roof Access Hatch Security Series

Constructed of aluminium for high security applications such as prisons, detention centres, banks, embassies and pharmaceutical buildings. Options include detention deadlocks, security glazing and security grilles.

Related literature

The following content references this product:

Standard product features


5 mm aluminium.


50 mm polyisocyanurate to cover and curb.

Lift mechanism:

Maintenance free compression springs located within inner and outer tube.


  • E-50CT - 915 x 915 mm.
  • NB-50CT - 760 x 1370 mm.
  • S-50CT - 915 x 760 mm.

Weight and Open angle:

Aluminium security series:

  • Type S-50CT - Weight: 68 kg, Open angle: 70°.
  • Type E-50CT - Weight: 80 kg, Open angle: 70°.
  • Type NB-50CT - Weight: 95 kg, Open angle: 90°.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-28/422 Roof hatches

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Bilco UK Ltd


+44 (0)1284 701696

Product reference

[Roof Access Hatch (Security Series), Type E-50C]
[Roof Access Hatch (Security Series), Type NB-50C]
[Roof Access Hatch (Security Series), Type S-50C]

Other requirements

[Curb modifications]
[Motorized operation]
[Special paint finish, colour ___]
[Stainless steel hardware]
[Ventilation louvres]

Manufacturer details

Park Farm Business Centre,
Fornham Saint Genevieve,
Bury St Edmunds,
Suffolk, IP28 6TS
Tel +44 (0)1284 701696
Fax +44 (0)1284 702531
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NBS National BIM Library