Partition wall for room - is folded together above floor and openable by moving along vertical guides formed by I-beams with cables and runners raised by host motor
NL8800191A
Heat-sensitive actuator - has spring released by heat-sensitive locking member and coupled to cable
NL8703096A
Hatch for ventilation - has clamps in profiled sections bearing against opposite sides of central hatch portion
NL8702478A
Ventilation hatch for building - has clamps securing central cover strip in two profiled sections fixed together
NL8701390A
Hingeable ventilation valve construction - includes side walls, sloping control sections and seal strips
NL8701391A
Roof mounted ventilation shutter construction - has inner and outer lids, insulated and interconnected by plastics profiles
NL8700183A
Heat and noise insulated ventilation shutter - has opening closed by three covers and surrounded by frame formed by plastics strips filled with foam material
NL8600075A
Ventilation plant hatch construction - has thermal and/or acoustic insulating filling between closures
NL8501673A
Sun protection grid system - screens direct sunlight from glazing system, by altering screen height and grid width
