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| Height | : | 4 in |
| Material | : | Aluminum/Stainless Steel |
| Shape | : | Round |
| Type | : | Insulated |
| Width | : | 8 in |
Duro Dyne®, 022138, Access Door, Insulated, Round Shape, 8 in Width, 4 in Height, Aluminum/Stainless Steel
- Insulated, closed cell neogasket, bonding of neoprene gasket to inside plate prevents leakage
- Tested to withstand 20 in W.G. positive pressure and 10 in of negative pressure
- Conical springs between the two plates provides for easy installation, high impact yellow plastic knobs are designed to avoid stripping and allow a tool free operation, built-in stud stop to prevent loss of knob
- Template for duct-opening cut out insures proper hole size
- 4 x 8 and 8 x 12 doors are 22 ga, also available in stainless steel and aluminum, available in 4 x 8 for 7, 11 and 14 in round duct