Product details ▾
DM20 CornerDM20 Flange detail
  • Conforms to standard European sizes
  • Corner design ensures correct insertion into section
  • Oval bolt hole to allow greater movement for alignment of bolt
  • Corner design allows sealant to be positioned where it can be most effective in reducing cause of possible air leakage
  • The preferred material to be used in corner applications and between flange joints is 440 Butyl Gasket Tape. This material does not require curing time prior to testing and is not prone to cracking in adverse conditions.

Technical Test Parameters

The characteristics of a particular duct connection or joint are classified in B&ES DW/144 Second Edition 2013; the joint rating for 20 is J2.  This rating is certified by BSRIA, the approved B&ES Test House.

Copies of the test certificate are available on request.

System Components and Constructional Specification

Ductmate Flange Roll Formed Galvanised Steel BS EN 10346:2009 DX51 Z275
Ductmate Corner Formed Galvanised Steel BS EN 10346:2009 DX51 Z275
Cleat Metal Formed Galvanised Steel BS EN 10346:2009 DX51 Z275
Cleat PVC Polyvinyl Chloride
G Clamp Pre Formed Zinc-Coated Steel
Gasket Between Joint 440 Butyl Or Self Adhesive Gasket Tape
Sealant For Corner 440 Butyl Or 795 Sealant

Note:  Ductmate 20 is only available in Galvanised Steel


Weights for Individual Items

Item Weight Each (KG)
Ductmate Flange 0.506 Kg/m
Ductmate Corner 0.026 Kg
Cleat Metal 0.02 Kg
Cleat PVC 0.09 Kg/m
G Clamp 0.054 Kg