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Description
Milcor roof hatches are engineered to provide secure, weather-resistant access to rooftops for maintenance, inspection, and equipment transport. Constructed from galvanized steel or aluminum with insulated covers and curbs, these hatches feature EPDM gaskets for tight seals, spring-assisted covers for one-hand operation, and slam latches with padlock hasps for security. Models in this group cover a range of common access sizes with load ratings suitable for commercial and industrial use.
Key Features:
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Heavy-gauge galvanized steel or aluminum construction with insulated covers and curbs
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EPDM gasketing and welded corner construction for weather resistance
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Spring-assisted covers for easy operation and automatic hold-open arm for safety
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Slam latch with interior and exterior handles, padlock hasps included
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Live load capacity rated at 40 psf or 70 psf depending on model
Specifications
- 3501-512-9
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Opening size: 30 in × 54 in
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Material: Galvanized steel
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Curb height: 12 in
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Insulation: 1 in rigid insulation in cover and curb
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Live load: 40 psf
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Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
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3501-511-9
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Opening size: 30 in × 54 in
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Material: Aluminum
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Curb height: 12 in
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Insulation: 1 in rigid insulation in cover and curb
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Live load: 40 psf
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Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
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3501-515-9
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Opening size: 30 in × 96 in
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Material: Galvanized steel
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Curb height: 12 in
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Insulation: 1 in rigid insulation in cover and curb
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Live load: 70 psf
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Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
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3501-410-9
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Opening size: 48 in × 48 in
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Material: Aluminum
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Curb height: 12 in
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Insulation: 1 in rigid insulation in cover and curb
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Live load: 70 psf
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Operation: Spring-assisted cover, hold-open arm, slam latch, EPDM gasket
How To
- Confirm roof opening dimensions match the model’s listed clear opening size.
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Place hatch curb over the prepared opening, square and level.
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Secure flange with appropriate fasteners and integrate with roof flashing and sealant.
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Attach spring hardware, hinges, latch, and hold-open arm as provided.
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Open and close the hatch to verify spring assist, latch security, and gasket seal.
FAQs
Q: What materials are available for these Milcor models?
A: Depending on the SKU, models are constructed of galvanized steel or aluminum.
Q: How much insulation is included in the cover and curb?
A: Each model includes approximately 1 inch of rigid insulation in both the cover and the curb.
Q: What live load ratings do these hatches support?
A: Load ratings range from 40 psf to 70 psf depending on the specific model.
Q: Can these roof hatches be secured?
A: Yes. All models include slam latches with interior/exterior handles and padlock hasps.
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