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Square 18x18 inch transparent HVAC access door with double cam latches

Ductmate

Ductmate GRFDC18GA HVAC Control Access Door 18x18 Cammed

SKU CH-30YY-ACY74

An 18-by-18-inch square duct access door with double-cam latch and 24-gauge construction rated to 175 °F

  • Product colorTransparent
  • 18 x 18 in access door simplifies duct inspection
  • Double cam latch secures door tightly under pressure
  • Fiberglass insulation reduces heat loss up to 175 °F
  • 24 ga steel construction resists corrosion in HVAC systems
  • Tab-in hinge allows quick installation without special tools

Square access door for 18-inch ductwork

The Ductmate GRFDC18GA is an 18-by-18-inch square access door built for HVAC duct systems. Its transparent fiberglass-insulated panel lets technicians inspect or service duct interiors without removing sections. The unit arrives new and installs with a tab-in hinge and double-cam latch for secure closure.

Fiberglass insulation handles 175-degree service

The 24-gauge steel frame and 2-1/8-inch thick fiberglass core maintain integrity up to 175 degrees Fahrenheit. This capacity covers typical residential and light-commercial supply and return ducts. The door is not fire-rated, so it cannot satisfy code requirements for rated shaft or firewall penetrations.

Tab-in hinge and double-cam latch simplify daily use

Two-inch mounting studs anchor the frame to the duct wall, while the tab-in hinge allows the door to swing clear for full opening access. The double-cam latch compresses the gasket evenly, reducing air leakage during system operation. No observation port is included, so visual checks require opening the door.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $60.99
Pricier than about 57% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameDUCTMATE
Product colorTransparent

Questions about this item

Will the 18 by 18 inch frame fit the rectangular duct run I already have in place?

The door measures 18 inches wide by 18 inches high with a 2 1/8 inch thick fiberglass-insulated panel and tab-in hinge, so it matches a standard 18 by 18 duct opening.

How can I confirm the double cam latch is sealing properly once installed?

Close the door and engage both cams; the panel should sit flush against the duct with no visible gap and the latch handles will lock firmly in the closed position.

Does the package include the mounting studs or do I need to supply my own?

The unit comes with 2-inch mounting studs already attached to the frame; no separate hardware is required for installation.

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