Answers to the sizing, rating, and code questions that come up when specifying commercial access hardware. Each links to the in-stock product.
A fire-rated access door is an access door tested and labeled to hold back fire and heat for a set time, so it maintains the fire resistance of the wall or ceiling it sits in. Fire-rated access doors carry a UL or Warnock Hersey label and are specified by fire-resistance rating, commonly 1.5 or 3 hour with 1 and 2 hour also available, and by mounting (surface, recessed, or upward-opening for ceilings). Insulated (temperature-rise rated) and non-insulated versions exist for different assemblies: the insulated version limits how much the unexposed face heats up, which some assemblies require, and the non-insulated version maintains the fire barrier without a temperature-rise limit. Victory stocks fire-rated access doors from Acudor, Elmdor, Cendrex, and JL Industries.
An access panel is a smaller flush cover for reaching a valve, junction, or shutoff behind drywall or masonry, and an access door is a larger hinged unit that may be fire-rated, insulated, or exterior-rated. The terms are often used interchangeably, and many manufacturers list the same product under both, so what matters for ordering is the wall type, the rough opening size, the fire rating, and the latch. Victory carries both across drywall, masonry, and fire-rated lines.
An H-20 floor door is engineered for AASHTO H-20 loading, which is a 16,000 lb wheel load, the load model used for highway truck traffic, typically applied with an impact allowance. It is the rating to specify where vehicles, forklifts, or heavy equipment cross the door, as opposed to a pedestrian rating for foot traffic only. Confirm the exact wheel load and impact factor on the submittal for the job. Victory stocks H-20 and pedestrian-rated floor doors from Bilco and Halliday.
Building codes set a minimum clear opening for roof access. IBC Section 1011.12.2 sets a minimum of 16 square feet with a least dimension of at least 24 inches when the roof is reached by a ladder or alternating tread device. The exact requirement depends on the adopted code edition and the access method, so confirm against the local code for the project. Standard roof hatch sizes such as 30x36 and 36x36 are chosen to meet the opening and to fit the ladder or stair. Victory stocks single and double-leaf roof hatches in standard and custom sizes.
Commercial grease ducts require access openings for inspection and cleaning, specified by NFPA 96 (Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations) and by the mechanical code. Access doors are placed at the intervals and locations the standard requires, are sized to allow cleaning, and are rated for the duct service. Grease duct access doors are typically stainless or coated steel with a high-temperature gasket. Victory stocks grease duct access doors sized to code.