Roof hatch type RHT in standard sizes

Opening (mm) - Weight:
RHT7090: 900 x 700 - 33 kg
RHT9090: 900 x 900 - 39 kg
RHT7014: 700 x 1400 - 64 kg
RHT1015: 1000 x 1500 - 72 kg
RHT1212: 1200 x 1200 - 78 kg
RHT1020: 1000 x 2000 - 86 kg
RHT9024: 900 x 2400 - 94 kg
Gorter® - completely assembled with

Thermal separated and insulated aluminium construction
Counterbalancing system for assisted opening and controlled closing
Double wind and weather tight sealing between lid and curb
Lid that engages automatically in open position, with one hand release
Eurocylinder (31 x 60 mm) lock with 3 keys, inside and outside operation.
Dimensions from 700 x 1400 mm with 3-point cilinderlock.
Diagonal handrail on inside lid to safely enter and leave roof hatch

Performance:

Insulation value (EN-ISO10077-1/2): Rc = 3,2 (m².K)W; U = 0,31 W/(m².K)
Sound reduction (EN-ISO140-3): 27 dB
Wind and water tightness (EN1027/EN1873): 650 Pa
Construction strength (EN1026/EN1027): ± 3000 Pa
Air tightness (EN 1026): 0,5 m³/hm1
Snow load EN 1991-1/5): 200 kg/m²

Standard powder coating:

Aluminium: RAL7047 (outside) and RAL9010 (inside)

Options

Gorter® - Electrical Operation of Roof Hatches and Floor Doors

electrical_operation Depending on door type, cover weight and other requirements we can install one or more rack-and-pinion drives. These drives are available in 24 Vdc or 230 Vac
Operation and control 230Vac
This system is controlled with a surface mounted or built-in switch. Operation of two drives through one switch is possible.
Operation and control 24Vdc
Operation of one or more drives is controlled by a control box with rectifier that is connected to the electricity network.
Features

communication with central alarm system
emergency switch
certified for smoke vent system / fire resisting system
programmable
operation control of other objects
control by automatic detectors - smoke, rain, wind, fire etc.
automatic sequence control of two covers that are overlapping
automatic stop in case of unequal load or overload
etc.

Depending on the features we will recommend a suitable control box type.
Emergency hatches and doors:
It is of life importance that an emergency door opens after a break down of the electrical system. For those reasons a control box can be provided with a built-in emergency power pack.
If the emergency situation is very critical it advisable to apply doors that can be manually operated after a total break down of electrical network system and the emergency power pack.
Electrical installation:
Roof Hatches and Floor Doors will be supplied with drives installed together with required options as control box, switches, detectors, installation drawings and electrical diagrams. Electrical installation should be carried out by an electrical contractor.

Specification Gorter® Safety Railing

safety_railing Partition and marking of safe area on the roof
Components: