?Off the shelf availability. ?Insulated mounting pads provided. ?Unique stepped ring design for flexibility. ABS Plastic T-Boxes ?Off the shelf availability. ?Flexible applications. ?Vacuum formed ensuring consistent high quality. ABS Plastic Style Transitions and Boxes

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EATURES

Ducting Design

Two Types of Ducting Available ?Round/wire with woven fabric. ?Round/wire and mylar fabric shell with 1.0”(2.6cm) wall thickness insulation. ?Fully insulated. ?Standard and custom sizes. ?Fits in any application where space is critical. Full Range of Diameters and Lengths Aluminum Style Transitions and Boxes ?3”through 8”(7.6cm through 20.3cm) diameters. ?5’, 10’, 20’, and 25’(1.53m, 3.04m, 6.10m, 7.62m) lengths ?Perimeter flanges on all boxes for mounting ease. Installation ?All ducting attaches easily to associated rings.
(1) . Installation ?Matched to Marine Air Systems’grilles and blowers. ?Non-restrictive air flow. ?All rings designed for close tolerance fit with ducting. Air Flow Designed and Tested Components
(1) Contact Marine Air Systems for availability. ?Transitions. ?Enclosed air boxes. ?T-boxes for units.

Transition Box Design

Large Selection and Variety Available in Aluminum and ABS Plastic

Aluminum Transitions ?Opening dimensions are 0.25" (0.64cm) larger thantransitionssize (i.e., 10 x 5 AL has a 10.25" x 5.25" open- ing.25.4cm x 12.7cm AL has a 26.0cm x 13.3cm opening).?Flange to flange dimensions are 1.75" (4.4cm) larger than transition size (i.e.,10 x 5 AL = 11.75" x 6.75".25.4cm x 12.7cm AL = 29.8cm x 17.1cm).?Depth of AL transition box is 0.25" (0.64cm) longer than thediameter of largest round ring (measured from back of flange).?Flange dimensions are 0.75" (1.9cm) on all sides. VF = Vacuum Formed AL = Aluminum

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PECIFICATIONS

Obround Rings Dimensions Vacuum-Formed Transitions 3”OB =3.875”x 1.625”(9.84cm x 4.13cm) 4”OB =5.125”x 2.250”(13.02cm x 5.72cm) 5”OB =6.500”x 2.625”(16.51cm x 6.67cm) 6”OB =7.438”x 3.375”(18.89cm x 8.57cm) 7”OB =9.000”x 3.625”(22.86cm x 9.21cm) 8”OB =9.250”X 5.000”(23.50cm x 12.70cm)?All obround rings are made of ABS plastic except the 8”OBwhich is made of aluminum.Add 0.25”(0.64cm) to obround dimensions for minimum box size.All rings are 2.0”(5.1cm) deep. ? Opening dimensions are 0.375" (0.95cm) larger thantransitionsize (i.e., 10 x 5 VF has a 10.375" x 5.375" opening. 25.4cmx 12.7cm VF has a 26.4cm x 13.7cm opening).? Flange to flange dimensions are 1.5" (3.8cm) larger than transi-tion size (i.e., 10 x 5 VF = 11.5" x 6.5" flange to flange.25.4cm x 12.7cm VF = 29.2cm x 16.5cm flange to flange).? Depth of 4x VF models is 4.0" (10.2cm) (measured from back offlange).Depth of 5x and 6x VF models i.e., either 4.5”(11.4cm) or 5.75”(14.6cm) depending on use of round or obround rings.? Flange dimensions are 0.5625" (1.43cm) on all sides. Square Vacuum-Formed Transitions ?Available in 5.25”and 6.25”(13.34cm and 15.88cm) square vac-uum -formed transition boxes.?Opening dimensions are 0.5”(1.27cm) larger than transition size. ?Flange to flange dimensions are 1.75”(4.4cm) larger than transi-tion size.?Depth is 0.125”(0.32cm) longer than the transition size. ?Flange dimensions are 0.625”(1.59cm) on all sides. Vacuum Formed T-Boxes ?Height of 10,000, 12,000 and 16,000 T-box with mounting flangeis 7.875" (20.0cm).?Height of 7,000 T-box with mounting flange is 6.875" (17.5cm). ?The 10,000, 12,000 and 16,000 T-boxes accommodate 6”, 5”and4”duct rings on one side and 5”, 4”and 3”duct rings on the other side (15.2cm, 12.7cm, 10.2cm and 12.7cm, 10.2cm, 7.6cmrespectively).?The 7,000 T-box accommodates 5”and 4”duct rings on one sideand 4”and 3”duct rings on the other side (12.7cm, 10.2cm and 10.2cm, 7.6cm respectively).

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