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Specifications
Roof hatch, type RHT7014
Standard opening size: 700 x 1400 mm (Hinge side = long side)
Weight: 68 kg
Gorter® - completely assembled with:
- Thermal separated and insulated construction
- Counter balancing system for assisted opening and controlled closing
- Diagonal hand rail to safely enter and leave roof hatch
- Double sealing for water and weather tightness
- Fully opened lid engages automatically, with release button
- Stainless steel Eurocylinder lock, in- and outside operation
CodeMark certified for Australia & New Zealand
- Australia CM70087, New Zealand CM70088
Performance according to CE (ETA-15/0338):
- Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
- Sound reduction (EN-ISO140-3): 26 dB
- Watertightness (EN 12208): Class E 650
- Resistance to wind load (EN 12210): Class E 3000
- Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
- Impact hard body (EN 356): Class P5A
- Impact soft body (EN 13049): Class 5
- Air permeability (EN 12207): Class 3
RHT powder coating:
Outside: powder coated in RAL7047
Inside: powder coated in white RAL 9010 (optional black RAL9004)
Scissor stair, type Large
Casing:
- For structural opening size (w x L x H): 700 x 1200 x 250 mm
Ceiling height: ........ mm, standard 3000 mm.
to be specified from top of floor to bottom of cover.
Option: up to 3500 mm (type Large-H)
Stair:
- Material: cast aluminium
- Size steps: 350 x 140 x 26 mm, anti-skid
- Step distance: ca. 250 mm, depending on ceiling height
- Horizontal position of steps is adjustable
Projection while opening:
Max. 700 mm at ceiling height 3000 mm (type Large)
Max. 950 mm at ceiling height 3500 mm (type Large-H)
Hardware:
- Hook and eye
- Handrail prepared for padlock to secure retracted stairs
- Stair guide control system
Extension of scissor stair in plenum (option):
The stair can be extended to bridge the distance between ceiling and roof hatch in cases where it is mounted in a suspended ceiling / plenum
Options
Gorter® Electrical Operation of Roof Hatches
Standard Electrical operation - GT35
The Gorter GT35 electrical operation is a solution, which can be fitted on any standard Gorter RHT roof hatch. The two powerful electric motors are always fitted as a pair on both sides of the lid.
Suitable for
- Roof hatches type RHT standard
Operation and control 230Vac
The Gorter GT35 is a system with two motors and a control unit. The system comes standard with a wireless remote control and a compact control panel. The keypad connected with signal cable can be installed remote from control unit.
Dimensions:
Control unit: 265 x 105 x 40 mm
Keypad: +/- 70 x 50 x 10 mm
Length of signal/power cable motors: 2 m
Electrical installation:
The drives and the wiring must be installed by a certified installer
Operation for a hatch with double lids
Depending on the access door type, the weight of the cover and the application, we can install one or more gear rack drives. These drives are available in 24 Vdc or 230 Vac.
Operation and control 230Vac
This is the simplest system with 1 motor. It can be operated with an integrated or surface-mounted switch, not included.
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, possibly combined with emergency switch
- 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.
Electrical installation:
The drives and the wiring must be installed by a certified installer.
Extension Scissor Stairs - Attic Ladder - Type Large
Extension of types Large and XL
Safety Approval Report(EN-ISO 14122-3) available
Height: ........mm
to be specified from ceiling to roof hatch flange or roof deck.
Stairs:
Material: aluminium
Steps are anti-skid
Size steps: 360 x 140 x 26 mm (types Large)
Size steps: 480 x 140 x 26 mm (type XL)
Steps can be horizontally adjusted
Hardware:
Brackets
More information? Please click Products > Ladders and stairs > Extension of scissor stairs - attic ladder
Downloads
Documentation:
Roof hatch RHT brochure2.71 MB
Technical Data Sheet - Roof Hatches RHT / RHTEI / RHTX154.82 KBTechnical Data Sheet - Scissor stair116.96 KB
Technical Data Sheet - extension of Scissor stair224.99 KB
Technical Data Sheet - Reset / Calibration GT35 / GT50202.93 KB
Manuals:
User information roof hatches2.30 MB
User information scissor stairs3.30 MB
Drawings:
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Watch the Revit instruction video
Installation roof hatch on concrete upstand42.61 KB
Installation roof hatch on concrete or steel roof45.29 KB
Installation roof hatch on concrete roof41.13 KB
Installation roof hatch on concrete roof insulated53.77 KB
Certificates:
Declaration of performance CE roof hatch RHT44.71 KB
KOMO Certificate: Roof hatch RHT120.07 KB
TÜV NORD Certificate: Roof hatch with ladder, scissor stairs and fixed stairs413.16 KB
TÜV NORD Certificate: Scissor stairs240.38 KB
Aboma Certificate: Roof hatch with scissor stairs70.66 KB
EuroSolid Report: Thermal performance Roof hatch RHT525.05 KB
Peutz Report: Sound insulation roof hatch RHT1.14 MB
Quote
Gorter roof hatches with scissor stairs provide practical and safe access to flat roofs for maintenance work or other purposes. The roof hatch can be installed on flat roofs with a maximum pitch of 30°.
Access to the roof
The Gorter combination of roof hatch and Large scissor stair provides generous access to the roof and is available for ceiling heights of max. 3,000 or 3,500 mm. The roof hatch has an opening of 700 x 1,400 mm.
Large type: max. ceiling height 3,000 mm
Large H type: max. ceiling height 3,500 mm
Scissor stair ensures free space under the roof hatch
Roof hatches combined with a scissor stair are ideal for applications where occasional but also frequent access to the roof is required. When the scissor stair is folded, you always have free space under the hatch.
New generation Gorter RHT roof hatch
The new generation RHT roof hatches feature an extremely strong and patented construction. Thanks to several modifications, the roof hatch is even more resistant against unexpected extreme loads, both during construction and in general use.
Improved features and functionalities of the indestructible and sustainable RHT roof hatch:
- Made and Designed in Holland
- New and improved, patented indestructible construction
- Trusted, with CE(ETA) certification
- Now available directly from stock in sizes up to 1000 x 3000 mm
- Fully standardised to metric dimensioning
Fully thermally broken
The Gorter RHT roof hatch has a fully thermally broken curb and cover, and a proven high insulation value. This minimises the chance of condensation forming and guarantees energy cost savings.
Gorter RHT roof hatch with Large scissor stair:
- Roof hatch with with fully thermally broken curb and cover
- Roof hatch safe operation with one hand
- Safe grip all the way to the roof
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10-year warranty on the roof hatch, 1 year on climbing devices
- Roof hatch and scissor stair with optional electric control
- High-quality aluminium construction of roof hatch and scissor stair
- Euro cylinder lock with indoor and outdoor operation
- Burglar- and sound-proof roof hatch
- Fast delivery
Scissor stair extension for plenum
The Large and Large H scissor stair can be used with an extension of scissor stair to bridge a plenum (= space between suspended ceiling and roof).
Read more about the advantages of Gorter roof hatches here
ETA and maximum performance
Thermally insulated construction
Complete with ladder or stairs
