Filter by
Product Family
Duct Profile
System of Measurement
Shape
Component
Mounting Location
REACH
Maximum Temperature
DFARS Specialty Metals
Export Control Classification Number (ECCN)
RoHS
Finish
Minimum Temperature
Gasket Material
Quick-Open Duct Access Panels
![]() | ![]() | ![]() |
Style A | Style B | Style C |
![]() | ![]() | |
Style D | Style E |
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 | 1815K66 | 000000 | ||
| A | — | 12" | 16" | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 1815K67 | 00000 | ||
| A | — | 18" | 22" | 14" | 18" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 1815K68 | 000000 | ||
| B | — | 8" | 12" | 4" | 8" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K101 | 00000 | ||
| C | — | 16" | 20" | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K102 | 000000 | ||
| C | — | 22" | 28" | 18" | 24" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 1815K71 | 000000 | ||
| D | — | 10" | 14" | 6" | 10" | 2 5/8" | 4" | -20° F to 200° F | Viewing Window | Clamp On | 1815K102 | 00000 | ||
| D | — | 16" | 20" | 12" | 16" | 8" | 8" | -20° F to 200° F | Insulated Backing, Viewing Window | Clamp On | 1815K101 | 000000 | ||
For Round Duct | ||||||||||||||
Galvanized Steel Panel and Frame | ||||||||||||||
| E | 5-6 | — | — | 4" | 8" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K105 | 00000 | ||
| E | 6-7 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K1 | 00000 | ||
| E | 7-9 | — | — | 4" | 8" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K106 | 00000 | ||
| E | 8-9 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K2 | 00000 | ||
| E | 10-11 | — | — | 4" | 8" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K107 | 00000 | ||
| E | 10-11 | — | — | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K109 | 000000 | ||
| E | 10-12 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K3 | 00000 | ||
| E | 12-14 | — | — | 4" | 8" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K108 | 00000 | ||
| E | 12-14 | — | — | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K11 | 000000 | ||
| E | 13-14 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K4 | 00000 | ||
| E | 15-16 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K5 | 00000 | ||
| E | 15-16 | — | — | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K111 | 000000 | ||
| E | 15-16 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K114 | 000000 | ||
| E | 17-18 | — | — | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K112 | 000000 | ||
| E | 17-18 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K115 | 000000 | ||
| E | 17-20 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K6 | 00000 | ||
| E | 19-20 | — | — | 8" | 12" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K113 | 000000 | ||
| E | 19-20 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K116 | 000000 | ||
| E | 21-22 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K117 | 000000 | ||
| E | 21-24 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K7 | 00000 | ||
| E | 23-24 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K118 | 000000 | ||
| E | 25-28 | — | — | 6" | 10" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K8 | 00000 | ||
| E | 25-28 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K119 | 000000 | ||
| E | 29-32 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K12 | 000000 | ||
| E | 29-32 | — | — | 18" | 24" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K122 | 000000 | ||
| E | 33-36 | — | — | 12" | 16" | — | — | -20° F to 200° F | Insulated Backing | Clamp On | 5252K121 | 000000 | ||
Duct Access Panels
![]() |
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 | 3978K41 | 000000 | ||
| 6 | 3 7/8" | 6" | No | 5/32" | Screw On | 3978K42 | 00000 | ||
| 8 | 4" | 6 3/8" | No | 5/32" | Screw On | 3978K43 | 00000 | ||
| 10 | 4" | 6 1/4" | No | 5/32" | Screw On | 3978K44 | 00000 | ||
| 12 | 4" | 6 1/8" | No | 5/32" | Screw On | 3978K45 | 00000 | ||

































