- Disc valve and telescopic duct (16.5 – 32 cm)
- The telescopic duct can easily be sawn off
- Material : tough polystyrene
- Colour on register side: White
- Colour on opposite side: Grey
- Cross-sectional area of opening : 10 cm²
Capacity Chart for Exhaust Air Valve – OPF 80
Capacity Chart for Exhaust Air Valve – OPF 100
Capacity Chart for Exhaust Air Valve – OPF 125 & 125K
Capacity Chart for Exhaust Air Valve – OPF 150 & OPF 160
Capacity Chart for Exhaust Air Valve – OPK 100 & 100K
Capacity Chart for Exhaust Air Valve – OPK 160 & 160K
Capacity Chart for Exhaust Air Valve – OPK 200df
Capacity Chart for Supply Air Valve – OPT63
Capacity Chart for Supply Air Valve – OPT100E
Capacity Chart for Supply Air Valve – OPT125
Capacity Chart for Supply Air Valve – OPT150 & OPT160
Capacity Chart for Supply Air Valve – OPT200
Capacity Chart for Supply Air Valve – OPTS 100E
Capacity Chart for Supply Air Valve – OPTR 100
Capacity Table – OPG 41
