5" Wide Thresholds | McMaster-Carr

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8 Products

Heavy Duty Ribbed Thresholds

Strong enough to handle forklifts and heavy vehicle traffic, these thresholds add a slip-resistant bridge between flooring surfaces. They’re 10 times stronger than standard thresholds and provide more grip than smooth thresholds.

Grit-Coated Aluminum—Grit-coated aluminum thresholds have a sandpaper-like texture for traction in wet and oily conditions. This coating also adds durability to these thresholds, so they last longer than uncoated aluminum versions. However, it makes them difficult to cut and drill.

ANSI/BHMA A156.21—ANSI and BHMA certified, these thresholds have been tested to withstand compressive loads.

	Ht.	Thk.	Load Cap., lb.	Fire Safety Rating	Specs. Met	Mount Type	Mounting Fasteners Included	Choose a Length, ft.		Per Ft.
Aluminum



	5"	1/4"	1/4"	10,000	UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant, ANSI/BHMA A156.21	Screw On	Yes	3 , 4 , 6 , 8	0000000	000000


	Grit-Coated Aluminum



			5"	1/2"	5/16"	10,000	UL 10B, UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant, ANSI/BHMA A156.21	Screw On	Yes	3 , 4 , 6	000000	00000

Ribbed Thresholds with Bulb Weatherstripping Seal


Style 1	Style 2

These thresholds have a seal to provide protection from the elements. With a ribbed top, they offer more slip resistance than smooth thresholds. Use them to make a transition between flooring surfaces as well as to reduce the gap between a door and the floor.

	Wd.	Ht.	Thk.	Seal Material	Fire Safety Rating	Mount Type	Mounting Fasteners Included	Choose a Length, ft.		Per Ft.
Aluminum



	1	5"	1/2"	1/8"	Vinyl Plastic	UL 10B: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	Screw On	Yes	3 , 4 , 6	000000	000000


	2	5"	1/2"	1/8"	Vinyl Plastic	UL 10B, UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	Screw On	Yes	3 , 4 , 6	0000000	00000

Ribbed Thresholds

With a ribbed top, these thresholds offer more slip resistance than smooth thresholds. Use them to make a transition between flooring surfaces as well as to reduce the gap between a door and the floor. They’re made of aluminum, so they’re lightweight, durable, and easy to clean. They won’t corrode from rain or snow if installed in an exterior doorway. Trim them with a hacksaw so they fit precisely in your space.

ANSI/BHMA A156.21—ANSI- and BHMA-certified thresholds have been tested to withstand a 1,000 lb. compressive load.

	Ht.	Thk.	Fire Safety Rating	Specs. Met	Mount Type	Mounting Fasteners Included	Choose a Length, ft.		Per Ft.
Aluminum



	5"	1/4"	3/16"	UL 10B, UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant, ANSI/BHMA A156.21	Screw On	Yes	3 , 4 , 6	000000	000000


	5"	1/2"	3/16"	UL 10B, UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant, ANSI/BHMA A156.21	Screw On	Yes	3 , 4 , 6	000000	00000

Smooth Thresholds

Easy to mop and wipe down, these smooth thresholds don't have ridges or grooves that can trap water and dirt. They're often used to transition between different flooring surfaces and reduce the gap between a door and the floor. Because they’re smooth, they provide less traction than ribbed thresholds. Cut them with a hacksaw for a precise fit.

304 Stainless Steel—304 stainless steel thresholds resist corrosion better than aluminum thresholds. Often installed in clean rooms and food processing areas, they stand up to frequent washings and mild chemical cleanings. Stronger and harder than vinyl rubber and aluminum, these thresholds last longer and are more durable. However, they’re harder to cut.

ANSI/BHMA A156.21—ANSI- and BHMA-certified thresholds have been tested to withstand a 1,000 lb. compressive load.

	Wd.	Ht.	Thk.	Fire Safety Rating	Specs. Met	Mount Type	Mounting Fasteners Included	Choose a Length, ft.		Per Ft.
304 Stainless Steel



	3	5"	1/2"	1/8"	UL 10B: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant, ANSI/BHMA A156.21	Screw On	Yes	3 , 4 , 6	0000000	0000000

Antislip Ribbed Thresholds

With a ribbed top and skid-resistant coating originally designed for aircraft carrier decks, these thresholds prevent slips, even in wet or oily areas. The sandpaper-like coating is embedded into the surface of the threshold, so it is durable and will not wear away. Install these thresholds in building entrances, kitchens, and bathrooms as safe transitions between flooring surfaces. They also reduce the gap between doors and the floor to improve the overall insulation of your space.

	Ht.	Thk.	Fire Safety Rating	Specs. Met	Mount Type	Mounting Fasteners Included	Choose a Length, ft.		Per Ft.
Grit-Coated Aluminum



	5"	1/2"	3/16"	UL 10B, UL 10C: 1 1/2 hr. for Wood Fire Doors, 3 hr. for Metal Fire Doors	ADA Compliant	Screw On	Yes	3 , 4 , 6	000000	000000