Transition box AST DN90/125, 400 mm. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Transition box AST 2xDN90/125, 400 mm. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box 1xDN90/125 unregulated. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box with regulator 2xDN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box unregulated 2xDN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box straight 1xDN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

High plenum box for drywall DN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box to drywall LOW DN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Plenum box for drywall 2xDN90/125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Linear plenum box 1xDN90 (70 x 270 mm). DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Linear plenum box 1xDN90 (70 x 270 mm). DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Linear plenum box 2xDN90 (500 mm). DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Pipe seal DN90. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Pipe seal DN90. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distribution box cone 4xDN90, throat 125. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distribution box cone 4xDN90, throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Cone distributor 6xDN90, throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distribution box cone 8xDN90, throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Cone distributor 10xDN90, throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distributor 4-6xDN90, throat 125-160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distributor 6-10xDN90, throat 125-160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distributor 8-12xDN90, throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distributor DN90, 4-8 inlet set, bottom connection DN160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.

Distributor set 6-12xDN90, bottom throat 160. DN90 refers to the 90 mm outside duct diameter; the inside diameter is 75 mm.