JL Industries RHDA-4 36 × 36 Roof Hatch – Diamond Series Aluminum, R-6 Insulation, Ladder Access

The JL Industries RHDA-4 Diamond Series aluminum roof hatch provides safe ladder access to rooftop areas with a compact 36″ × 36″ clear opening. Built from corrosion-resistant aluminum, both the curb and cover are insulated to R-6 for improved energy efficiency. A gas spring-assisted lid makes operation smooth and controlled, while the lockable latch ensures security from inside or outside. This hatch is engineered for long-term durability in commercial and institutional buildings.

Key Features

• 36″ × 36″ clear opening for ladder access
• R-6 insulated curb and cover for energy efficiency
• Corrosion-resistant aluminum construction
• Gas spring-assisted lid with lockable latch

Model: RHDA-4

Manufacturer: JL Industries / Activar Construction Products Group

Series: Diamond Series

Dimensions: 36″ × 36″ clear opening

Frame/Curb: Aluminum curb insulated to R-6

Cover: Aluminum cover with R-6 insulation

Material: Heavy-duty corrosion-resistant aluminum

Operation: Gas spring-assisted lid for smooth lift and closure

Hinge: Heavy-duty continuous hinge

Latch: Lockable latch, operable inside and outside

Finish: Mill finish aluminum (standard)

Application: Ladder access to roof areas

Country of Origin: USA

• Confirm roof opening matches the 36″ × 36″ hatch size.
• Place the hatch curb into the prepared roof opening, ensuring it sits level.
• Fasten the curb securely to roof framing with manufacturer-recommended hardware.
• Flash and seal the curb with roofing membrane for a watertight fit.
• Test lid function to ensure gas springs lift and close smoothly.
• Check latch for proper locking and unlocking from both inside and outside.

Q: What are the dimensions of the RHDA-4 roof hatch?
A: The clear opening is 36″ × 36″.

Q: Is this hatch insulated?
A: Yes, both the curb and cover are insulated to R-6.

Q: What material is the RHDA-4 made from?
A: It is constructed from corrosion-resistant aluminum.

Q: Can the latch be locked from outside?
A: Yes, the latch is lockable and operable from both inside and outside.

Q: What type of access is this hatch designed for?
A: It is designed for ladder access to roof areas.