Specification

TECHNICAL
SPECIFICATION
I. APPLICATION
The DWF fire-rated, knee wall door enables access to non-habitable space located behind a
vertical wall. White finished door sash is 2.6 inches thick and is filled with fire-proof insulation
material. The door structure reduces heat transfer in the winter or summer months and
additionally prevents from quick spread of fire. The door can be installed in a right and left
opening version.
II. STRUCTURE
No. Element Description
1 Door
Insulated with fire-proof material, 2
½”
Thermal insulation thickness: 2 ⁄”
Finished on both sides with white HDF board.
2 Frame
Made of pinewood.
Depth (Jamb):
3 ½”
Equipped with a seal.
3 Equipment
Handle with a lock to ensure tight closing.
1 ⁄ wide wooden finishing slats in natural colour.
III. SIZES
No. Size
1 21 x 31
2 27 x 35
IV. TECHNICAL PARAMETERS
No. Description Value Standard
1 Door heat transfer coefficient U = 0.11 BTU/hft²F PN-EN 10211:2008
2 Tightness 4th class* EN 12207
3 Fire resistance (on both sides) EI
1
45 EN 13501-2
* Manufacturer’s internal calculations
V. ASSEMBLY INFORMATION
DWF knee wall access door comes pre assembled and must be installed in framed rough
opening in accordance with the included fitting instructions. One must ensure that the gap
between door frame and rough opening framing is properly insulated.
DWF Fire-rated
KNEE WALL ACCESS DOOR
*
45min
8.9
R - value