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  • Aluminum Mill Finish
  • Designed for Stair Access
  • Installs Easily Over Roof Opening
  • Embossed Counter flashing Secures Membrane without Tools
  • 11 Gauge Aluminum, Mill Finish
  • Energy Efficient (R-6 Polyiso Insulation in Both Curb/Cover)
  • EPDM Continuous Hatch Seal
  • OSHA Compliant Counterbalanced Springs
  • Weather Resistant Gasketing
  • Long Life, Low Maintenance
  • Five Year Warranty
  • Made in America
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JL RHDA Aluminum Diamond Series™ Roof Hatch Stair Access

The RHDA roof hatch diamond aluminum series is designed for safety and easy installation and roof access.  The sizes provided above are designed for stair access.  Diamond Grip embossed counter flashing design quickly secures the roof membrane and backing rod without sharp tools or edges.  Manufactured from 11 gauge aluminum, mill finished with 18 gauge liner.  Constructed with weather resistant gasketing, these units feature long life, low maintenance and ease of operation.  Springs are counterbalanced to comply with OSHA 1023 fall protection for single hand operation of latches to a ladder.

Product Details
  Single wall curb and counter flashing with Diamond Grip to secure roof membrane without tools. 11 gauge aluminum mill finish.
Cover:  Formed and welded with liner, tested to support a live load of 40psf. 11 gauge with 18 gauge liner aluminum mill finish.
Gasket:  Continuous, weatherproof EPDM sponge rubber adhesive-backed seal.
Insulation:  1” polyisocyanurate in curb and cover with thermal resistance R-6.
Spring:  Counterbalanced compression springs contained in clear zinc-plated steel cylinders.
Latch:  Clear zinc-plated steel slam latch with inside and outside handles and padlock hasps. Tested to 50psf wind uplift.
Hold Open Arm:  Clear zinc-plated automatic locking hold open arm with red vinyl grip for one handed door operation.
Hinge:  Heavy duty clear zinc-plated steel pintle hinge.
Options: 1.5" polyiso insulation, wood nailer, fiberboard, curb double wall, curb height, stainless hardware, PVDF finishes.

 RHDA-2  Roof Accessories Catalog
 Specifications  RHDA-3  JL Catalog
 Warranty  RHDA-6  Diamond Flyer  
 Installation Instructions  Made In USA  Comparison Chart

Aluminum Roof Hatch Models
Model Number Net Opening
W x L*
Unit Weight   Access
RHDA-1 36" x 30" 68 lbs. Ladder
RHDA-2 30" x 54" 88 lbs. Stair
RHDA-3 30" x 96" 133 lbs. Stair
RHDA-4 36" x 36" 76 lbs. Ladder
RHDA-5 48" x 48" 111 lbs. Ladder
RHDA-6 32" x 72" 110 lbs. Stair
RHDA-7 37" x 30" 69 lbs. Ladder
* Latch is located on the Length Side
Custom sizes available.

Stair Access

Available Options:
  • Domed Roof Hatch
  • Double Wall Curb Roof Hatch
  • Safety Posts LP-4 & RSLP-G
  • Additional Color Finishes

JL Industries a division of Activar Construction Products Group, Inc. Model RHDA-2
JL Industries a division of Activar Construction Products Group, Inc. Model RHDA-5
JL Industries a division of Activar Construction Products Group, Inc. Model RHDA-6