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Fire-Rated Pass-Through Chambers

Fire-rated Pass-Through
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Resources for Architects and Builders
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  • Fire-rated access panels carry the UL 10B label for 90-minute fire exposure (suitable for 2-hour wall rating)
  • 304 electropolished finish is ISO 5 – 8 compatible
  • Heavy-duty, double-wall insulated door construction prevents chamber misalignment and door damage when operators apply excessive force to an interlocked door
  • Fire-rated 10” x 10” (254 x 254mm) viewing windows allow convenient monitoring of pass-through contents
  • Rugged mechanical interlock prevents cross-contamination by allowing only one door at a time to open
  • Recessed pull-to-open latch withstands up to 50 lbs. of force without damaging the catch, interlock, or door frame
  • Spring-action, self-closing doors simplify operation, minimize the chance of contamination

These pass-through chambers are designed for installation in a fire-rated cleanroom or laboratory wall. They allow transfer of materials into and out of the controlled environment, and their rugged interlock mechanism offers high reliability with no maintenance. The electropolished all-304 stainless steel construction and continuous-seam welds ensure a clean environment compatible with cleanroom standards.

Fire-Rated Access Doors

Each chamber features dual 2.5" (64 mm)-thick, insulated electropolished 304 stainless steel access panels (doors), each with a recessed pull latch. Insulation is SuperWool® Plus fire-resistant calcium-magnesium-silicate (CMS) fibers. Fire-rated viewing windows afford easy viewing of pass-through chamber contents. Adjustable spring hinges provide self-closure of both doors. These modules bear a UL- listed “10B” label for 1.5 hours in walls (maximum temperature rise to 450°F [232°C] in 30 minutes).
Fire-Rated Pass-Throughs*
Overall Nominal Dimensions
W” x D” x H” (mm)
Outside
Dimensions incl. hardware
W” x D” x H” (mm)
Inside Clearance Dimensions
W” x D” x H” (mm)
Electropolished 304 Stainless Steel
Cat. # Price
24 x 18 x 18
(610 x 457 x 457)
24.13 x 25 x 18.75
(613 x 635 x 476)
21.5 x 17.88 x 15.38
(546 x 454 x 391)
2641-11A Price
24 x 24 x 24
(610 x 610 x 610)
24.75 x 31 x 24.13
(628 x 787 x 612)
21.38 x 23.88 x 21.5
(543 x 606 x 546)
2641-12 Price
24 x 24 x 48
(610 x 610 x 1219)
24.75 x 31 x 48.13
(628 x 787 x 1122)
21.38 x 23.88 x 45.5
(543 x 606 x 1155)
2641-13 Price
36 x 36 x 36
(914 x 914 x 914)
36.75 x 43 x 36.13
(933 x 1092 x 917)
33.38 x 35.88 x 33.5
(848 x 911 x 851)
2641-14 Price
36 x 36 x 48
(914 x 914 x 1219)
36.75 x 43 x 48.13
(933 x 1092 x 1222)
33.38 x 35.88 x 45.5
(848 x 911 x 1155)
2641-15 Price
* Add 0.5" (13mm) to the outside hardware W x H dimensions for installation cut-out. All models include 10” x 10” (254 x 254mm) dual-side viewing windows. All chambers feature continuous-seam welds to prevent particle influx and simplify cleaning.

SuperWool® is a registered trademark of Morgan Thermal Ceramics
Fire-Rated Convenience Doors also available: UL-B fire door mounts to most common wall types. Allows convenient transfer of small parts when a holding chamber is not required.
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