Stop-nuts prevent the knobs from being totally removed.
Metal knobs.
Retaining cable with M6 bolt and nut (order separately, art. nr. D01V-2001) preventing the loss of the door.
Duct Wall Thicknesses RD access doors with ceramic fibers KF : S1 = max. 5 mm For thicker duct wall thickness special access door versions with longer bolts can be ordered.
Top Required Clearance when Installed RRD 18: H ≈ 36 mm RRD 21: H ≈ 40 mm RRD 32: H ≈ 55 mm RRD 43: H ≈ 60 mm RRD 54: H ≈ 70 mm
Steel knobs made of galvanized steel or stainless steel V2A
KF Gasket: Binders and adhesives tend to crumble when exposed to temperatures above 200°C. Should that be the case the gaskets must be replaced after each opening of the access door.
Prices
Opening Dimensions
RRD opening dimensions according to the duct-Ø
Installation Instructions
Installation Video
To be taken into consideration when fitting stainless steel parts