AMC 2026 catalogue

HVAC & Refrigeration

Roof Curbs and Accessories

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HVAC & REFRIGERATION

WWG4YN36 WWG4YN31 WWG4YN30

Rooftop Accessories Flat Roof Flashing—Flexible rubber cap fastens to seamless aluminum base for secure, watertight seal. Stainless steel clamps included.

For Use With Base Characteristics No. of Pipes Pipe Size (in.) Includes Brand

Item

No. Roof Vent Pipe Flashing

Adjustable

1

1⁄4 to 5 3⁄4 in

Oatey

WWG39AT41 EPDM 1 1⁄4 to 1 1⁄2 WWG39AT42

Flashing Vent

2 WWG39AT43 3 WWG39AT44 4 WWG39AT45

Galvanized

1 1⁄2 to 3 WWG39AT37 2 WWG39AT34 3 WWG39AT35 3 to 4 WWG39AT38 4 WWG39AT36

Thermoplastic 1 1⁄2 to 3 WWG39AT39 3 to 4 WWG39AT40

Corrugated Metal

Roofs and Walls

Base Flexibility, Designed to Form a Seal on Most Panel Configurations and Roof Pitches

1⁄4 to 5 3⁄4 Master Flash

GUS46E374 4 to 8 1⁄4 GUS46E375 6 3⁄4 to 13 1⁄2 GUS46E376 One Piece Square Flexible Flanged, Complete with Integral Gray EPDM Cap which Bends to

Conform to Contours of Roof Irregularities

1⁄4 to 4 Stainless Steel Gripper

Portals Plus

WWG4YN35 4 to 7 WWG4YN36 7 to 13 WWG4YN37

Flat Roofs — 2 to 6

WWG4YN30 4 (2) 3⁄8 to 1; (2) 1 to 2 WWG4YN31

Pitched Roofs Thermoplastic

1

2 Oatey

WWG1VNH5 3 WWG1VNH6 4 WWG1VNH7

Shingled Roofs —

1 1⁄4 - 1 1⁄2

Portals Plus

WWG4YN38 2 WWG4YN39 3 WWG4YN40 4 WWG4YN41

MASTER FLASH, OATEY, PORTALS PLUS

Nonventilated Roof Curbs Prefabricated, leakproof curbs provide compatibility between ventilator, curb, and roof opening on commercial and industrial buildings. Most include 1" insulation and integral damper tray. Adjustable curbs are shipped unassembled.

Straight-Sided, 2" or 4" Flashing Flange—For flat roof decks with up to 6" of insulation. Roll-formed with 18-ga. galvanized steel and 1 welded side for added strength. Fixed curbs include 1 1⁄2" lap-joint wood nailer. For insulated and noninsulated metal, concrete, or wood roof decks. For rubber membrane and urethane foam roofing materials.

DAYTON

GFN2RB74

Curb Square O.D. (in.) Curb Square I.D. (in.) Curb Height (in.) Flashing Flange (in.) Damper Size (in.) Includes

Item

No. Fixed, Nonventilated

15 11 1⁄2 12 2 9 1⁄2 x 9 1⁄2 Damper Tray GFN2RB74 15 1⁄2 12 1⁄2 12 2 9 1⁄2 x 9 1⁄2 Damper Tray GFN5EFJ2 23 20 12 2 17 1⁄2 x 17 1⁄2 Damper Tray GFN3FLT5 27 24 12 2 21 1⁄2 x 21 1⁄2 Damper Tray GFN3AZH7 27 1⁄2 24 1⁄2 12 2 — — GFN2RB78 33 30 12 2 27 1⁄2 x 27 1⁄2 Damper Tray GFN3AZH8 34 1⁄2 31 1⁄2 12 2 — — GFN3AZH9 37 1⁄2 34 1⁄2 12 2 — — GFN3AZJ1 38 1⁄2 35 1⁄2 12 2 27 X 27 Damper Tray GFN24Y860 39 36 12 2 33 1⁄2 x 33 1⁄2 Damper Tray GFN3AZJ2 43 1⁄2 40 1⁄2 12 2 — — GFN3AZJ3 44 1⁄2 41 1⁄2 12 2 39 x 39 Damper Tray GFN2RB82 45 42 12 2 39 1⁄2 x 39 1⁄2 Damper Tray GFN3AZJ4 49 46 12 2 — — GFN3AZJ5 50 1⁄2 47 1⁄2 12 2 39 x 39 Damper Tray GFN5EFJ3 53 50 12 2 47 1⁄2 x 47 1⁄2 Damper Tray GFN3AZJ6 55 1⁄2 52 1⁄2 12 2 — — GFN3AZJ7 59 56 12 2 53 1⁄2 x 53 1⁄2 Damper Tray GFN3FLT6 62 1⁄2 59 1⁄2 12 2 50 x 50 Damper Tray GFN2RB83 65 62 12 2 59 1⁄2 x 59 1⁄2 Damper Tray GFN3AZJ8 71 68 12 2 — — GFN3AZJ9 Adjustable, Nonventilated

41 to 49 1⁄2 37 to 45 1⁄2 12 4 39 to 50 Sq. — GFN2ZV85 50 to 58 1⁄2 46 to 54 1⁄2 12 4 50 x 50 — GFN2ZV86 64 to 72 1⁄2 60 to 68 1⁄2 12 4 — — GFN2ZV87