A-FPS Flood-Resistant Floor Door

The A-FPS is a flood-resistant aluminum floor door for applications where water may rise above the surface opening or where odors and gases from below must be suppressed. It’s suitable for retrofit installations and is designed for use in potable water applications.

Its 1/4" aluminum diamond plate door panel is reinforced for a live load of 625 lbs./sq. ft. and holds up to 10 ft. head of water from the outside under downward pressure. The door panel overlaps the frame and compresses a 3/8" neoprene gasket on contact, creating a flood-resistant seal.

A U-shaped neoprene gasket and Type 316 stainless steel pressure-lock system work together to reduce odor and gas escape from below.

Why Do Contractors Choose A-FPS Flood-Resistant Floor Door?

• Flood-resistant construction: The door panel overlaps the frame and compresses the 3/8" neoprene gasket on contact, holding up to 10 ft. head of water from the outside under downward pressure.
• High live load capacity: The 1/4" aluminum diamond plate door panel is reinforced for a live load of 625 lbs./sq. ft., making it suitable for high-traffic floor installations.
• Odor and gas suppression: The U-shaped neoprene gasket and stainless steel pressure-lock system reduces the amount of odor and gas escaping from beneath the floor.
• Corrosion-resistant hardware: Type 316 stainless steel butt hinges, tamper-proof bolts and nuts, and a stainless steel pressure-lock system resist corrosion in wet and chemically active environments.
• Automatic hold open arm: The hold open arm with red vinyl grip locks the door at 90 degrees for hands-free access. Stainless steel compression springs provide lift assistance when opening.

Ready to order? Request a quote for the A-FPS to confirm sizing, configuration options, and production lead times based on your project timelines.

Key Product Specifications

• Application: Floor installations where water may rise above the surface opening, or where odor and gas suppression is required; suitable for potable water applications and retrofit projects
• Material: Aluminum door and frame; Type 316 stainless steel hinges and hardware
• Door: 1/4" aluminum diamond plate; live load rated at 625 lbs./sq. ft.; holds up to 10 ft. head of water (downward pressure only)
• Frame: Angle frame construction, L3 x 3 x 1/4; 4" high horizontal leg for bolting to concrete
• Hinge: Type 316 stainless steel butt hinges with tamper-proof stainless steel bolts and nuts
• Gasket: 3/8" neoprene gasket
• Opening device: Automatic hold open arm with red vinyl grip, opens to 90 degrees; stainless steel compression springs provide lift assistance
• Standard latch: Type 316 stainless steel pressure-lock system with exterior staple for padlock
• Finish: Bituminous coating on exterior frame
• Standard sizes: 24" x 24" to 36" x 48"

Need a size that isn't on the standard list? Request a custom quote to get the A-FPS manufactured to your exact dimensions.

What Comes Standard and What Can Be Configured?

Every A-FPS ships with the following as standard:

• 1/4" aluminum diamond plate door panel
• Aluminum angle frame with 4" high horizontal leg
• Type 316 stainless steel butt hinges with tamper-proof stainless steel bolts and nuts
• 3/8" neoprene gasket
• Automatic hold open arm with red vinyl grip
• Stainless steel compression springs
• Type 316 stainless steel pressure-lock system with exterior staple for padlock
• Bituminous coating on exterior frame

Every unit ships with the full standard specification listed above.

What Should You Confirm Before Ordering A-FPS?

• Floor opening size: The frame opening matches the nominal door size. Confirm your floor cutout matches the nominal door dimension before placing your order.
• Water pressure direction: The A-FPS is rated to withstand up to 10 ft. of water head from the outside under downward pressure only. Confirm that your application doesn’t require upward pressure resistance before ordering.
• Live load requirement: The door panel is rated for 625 lbs./sq. ft. Confirm this meets the load requirements for your specific installation before ordering.
• Potable water suitability: The A-FPS is designed for use in potable water applications. If your project has specific material certifications or compliance requirements beyond the standard spec, confirm with our team before ordering.
• Retrofit vs. new construction: The 4" high horizontal leg bolts to existing concrete, making the A-FPS suited for retrofit. If you’re installing in new construction, confirm the frame configuration works with your pour schedule.
• Custom size: If your floor opening doesn't match a standard size, custom sizes are available. Contact our team before ordering to confirm dimensions and lead time.
• Production lead time: Lead time depends on size and configuration. Request a quote to confirm production and ship dates.

Installation Notes

• The area of the frame in contact with concrete must be painted with bituminous coating before installation.
• The angle frame bolts to concrete through the 4" high horizontal leg. Confirm anchor bolt placement matches the 9/16" diameter holes in the frame before cutting the floor opening.
• The door panel overlaps the frame on all sides. Confirm the overlap seats correctly against the neoprene gasket after installation to ensure a flood-resistant fit.
• The automatic hold open arm locks the door at 90 degrees when open. Release the arm before lowering the door to avoid damage to the arm
• Stainless steel compression springs provide lift assistance when opening the door. Confirm spring tension is intact after installation before handing the door over to the end user.

Who Installs A-FPS and Where Is It Used?

The A-FPS is specified by engineers, contractors, and facility managers who need a flood-resistant floor access point in environments where water intrusion, odor, or gas suppression is a structural requirement.

Common applications include:

• Water and wastewater facilities: Access to below-grade infrastructure in environments where water may rise above the floor opening, including pump stations, wet wells, and treatment plants.
• Utility vaults and manholes: Floor access in underground vaults where odor and gas from below must be controlled at the surface.
• Potable water installations: Access doors in potable water environments, where the aluminum and stainless steel construction meets the material requirements of the application.
• Industrial facilities: High-load floor access in manufacturing and processing environments where the 625 lbs./sq. ft. live load rating is required.
• Retrofit projects: Replacement floor doors in existing concrete floors, where the angle frame bolts to the existing slab without requiring a new concrete pour.

Looking for other floor access options? Browse our floor doors to compare the A-FPS against similar products.

Frequently Asked Questions

1. What floor opening do I need for A-FPS?

The frame opening matches the nominal door size. A 30" x 48" door, for example, requires a 30" x 48" frame opening on the floor.

2. Is A-FPS rated for upward water pressure?

No. The A-FPS holds up to 10 ft. head of water from the outside under downward pressure only. It’s not rated for upward pressure applications. Contact our team if your installation requires upward pressure resistance.

3. What live load is A-FPS rated for?

The 1/4" aluminum diamond plate door panel is reinforced for a live load of 625 lbs./sq. ft. Confirm this rating meets the load requirements for your specific installation before ordering.

4. How does the door stay open during maintenance?

The automatic hold open arm with red vinyl grip locks the door at 90 degrees when open. Stainless steel compression springs provide lift assistance when raising the door. Release the hold open arm manually before lowering the door.

5. Can I add a padlock to A-FPS?

Yes. The standard latch includes a Type 316 stainless steel pressure-lock system and an exterior staple that accepts a standard padlock for additional security.

Why Buy A-FPS From Acudor Access Panels?

Acudor Access Panels is an authorized Acudor distributor. Every A-FPS we supply is manufactured to Acudor's published specifications, and our team confirms sizing, flood-resistance requirements, and production lead times for your specific order before you commit.

Have any questions? Contact our team or call +1-888-327-5471 to confirm specifications, compare sizes, and get guidance from our specialists.