Duct Inspection Doors | McMaster-Carr

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For Maximum Duct Size

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41 Products

Performance

Quick Open

It only takes a few seconds to get inside duct

36 products

High Temperature

Withstand temperatures up to 2300° F

2 products

Performance

Corrosion Resistant

Won't rust in wet environments

39 products

Quick-Open Access Panels


Style A	Style B	Style C

Style D	Style E

It only takes a few seconds to get inside duct that needs regular inspection and cleaning. These panels clamp onto cutouts and have a gasket for a tight seal. Use the included template to make the cutout. Also known as cleanouts.

Galvanized Steel Panel and Frame—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.

			For Duct		For Cutout		Window
	Style	For Duct Size	Ht.	Wd.	Ht.	Wd.	Ht.	Wd.	Temp. Range, ° F	Features	Mount Type		Each
For Rectangular Duct







				Galvanized Steel Panel and Frame

				A	—	10"	14"	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	000000


				A	—	12"	16"	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	00000
				A	—	18"	22"	14"	18"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	000000
				B	—	8"	12"	4"	8"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	00000
				C	—	16"	20"	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
				C	—	22"	28"	18"	24"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	000000
				D	—	10"	14"	6"	10"	2 5/8"	4"	-20° F to 200° F	Viewing Window	Clamp On	00000000	00000
				D	—	16"	20"	12"	16"	8"	8"	-20° F to 200° F	Insulated Backing, Viewing Window	Clamp On	00000000	000000


				For Round Duct







								Galvanized Steel Panel and Frame

								E	5-6	—	—	4"	8"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	00000


								E	6-7	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	7-9	—	—	4"	8"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	00000
								E	8-9	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	10-11	—	—	4"	8"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	00000
								E	10-11	—	—	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	10-12	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	12-14	—	—	4"	8"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	00000
								E	12-14	—	—	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	000000
								E	13-14	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	15-16	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000


								E	15-16	—	—	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	15-16	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	17-18	—	—	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	17-18	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	17-20	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	19-20	—	—	8"	12"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	19-20	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	21-22	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	21-24	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	23-24	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000


								E	25-28	—	—	6"	10"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	000000	00000
								E	25-28	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	29-32	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	0000000	000000
								E	29-32	—	—	18"	24"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000
								E	33-36	—	—	12"	16"	—	—	-20° F to 200° F	Insulated Backing	Clamp On	00000000	000000

Access Panels

Create an entry point for cleaning and inspecting duct. These panels cover cutouts and mount with screws. Also known as cleanouts.

Aluminum Panel and Frame—One-third the weight of steel, aluminum components are easier to handle during installation. They also resist rust in wet environments but won’t last as long as steel.

		For Cutout		Mounting
	For Duct Size	Ht.	Wd.	Fasteners Included	Hole Dia.	Mount Type		Each
For Round Duct







				Aluminum Panel and Frame

				4	2 1/2"	3 3/4"	No	5/32"	Screw On	0000000	000000


				6	3 7/8"	6"	No	5/32"	Screw On	0000000	00000
				8	4"	6 3/8"	No	5/32"	Screw On	0000000	00000
				10	4"	6 1/4"	No	5/32"	Screw On	0000000	00000
				12	4"	6 1/8"	No	5/32"	Screw On	0000000	00000

High-Temperature Quick-Open Access Panels

With a ceramic fiber gasket and an iron frame, these panels withstand temperatures up to 2300° F. They’re commonly used in grease ducts and other high-temperature systems that need frequent cleaning. Panels clamp onto cutouts and the gasket keeps heat and material sealed inside. Use the included template to make the cutout. Also known as cleanouts.

	For Duct		For Cutout
	Ht.	Wd.	Ht.	Wd.	Temp. Range, ° F	Mount Type		Each
For Rectangular Duct







				Galvanized Steel Panel and Iron Frame

				10"	14"	6"	10"	Not Rated to 2,300° F	Clamp On	00000000	0000000


				12"	16"	8"	12"	Not Rated to 2,300° F	Clamp On	00000000	000000