Standard Bolted Access Doors

Our economical standard bolted access door provides easy access to the interior of duct systems. To gain access, simply turn the hand knobs and remove the door. No special tools or wrenches are needed.

This oval door is designed for easy installation on round, flat oval, or rectangular duct. It is constructed of an outer door connected to an inner plate by spring-loaded carriage bolts. Once the inner plate has been inserted in the duct opening, the carriage bolts can be tightened by turning the hand knobs.

An inert cellular sponge gasket fixed to the inner plate keeps the door leak free at pressures of more than 20 inches wg. The door has permanently bonded polyester insulation to prevent moisture from forming on its outer surface. An adhesive template is provided for field installations so that the duct opening can be cut without expensive layout or measuring. Doors are available for single-wall duct or double-wall duct with 1-inch-thick insulation.


Available Sizes—Standard Bolted Access Doors

Nominal
Opening
(inches)

(A) Applicable Range

of round diameters, minor axes of flat oval, flat spans of flat oval, or rectangular dimensions

(inches)
Material
Thickness
(gauge)

10 x  6  

5-30

22

16 x 12*

8-60

20

*Also available for double-wall applications with 1-inch-thick insulation.
SilverGuard Antimicrobial
 

 
McGill AirFlow's Access Doors:

Standard Bolted Access Doors
Pressure-Relief Access Doors
Hinged Access Doors

  

© 2002-2008 McGill AirFlow LLC
An enterprise of United McGill Corporation—Family owned and operated since 1951

Unless otherwise noted, all (™) trademarks and (®) registered trademarks are property of United McGill Corporation.