Portals Plus 32181, Double RC-4A Raised Canted Curb- 9 1/2" High

The Portals Plus 32181 Double RC-4A Raised Canted Curb is designed for decks with rigid insulation in dual pipe portal applications. The curb is fabricated from 18-gauge galvanized steel, with a full integral base plate, continuously welded corner seams and a factory-installed wood nailer. Insulation is 1.5″ thick, 3-lb density rigid fiberglass on all four sides. The overall size is 27½″ long × 12″ wide × 9½″ high, and the raised canted profile provides a built-in slope for elevated mounting surfaces. This curb is used with the double portal cap system.

Key features:

• 18 gauge galvanized steel curb with integral base plate and welded corner seams.
• Factory-installed wood nailer for secure attachment.
• 1.5″ thick rigid fiberglass insulation (3 lb/ft³) on all four sides.
• Measures 27½″ L × 12″ W × 9½″ H with a raised canted wall profile, for dual pipe portal systems.

• SKU: 32181 (POR-32181)
• Product type: Double RC-4A Raised Canted Curb – 9½″ High
• Length: 27½″
• Width: 12″
• Height: 9½″
• Material: 18-gauge galvanized steel
• Insulation: 1.5″ rigid fiberglass (3 lb/ft³) on all four sides
• Construction: Integral base plate, continuously welded corner seams, factory-installed wood nailer
• Application: Decks with rigid insulation for use with double pipe portal systems

Q: What are the exact external dimensions of this curb?
A: The curb measures 27½″ in length, 12″ in width, and 9½″ in height.

Q: Does this item include the pipe portal cover or cap assemblies?
A: No — this listing is for the curb only. The covers, caps, and clamps for the portal system must be purchased separately.

Q: What roof deck condition is this curb designed for?
A: It is designed for decks with rigid insulation where a raised canted (sloped) wall curb is required for dual pipe penetrations.

Q: Why does the curb have 1.5″ rigid fiberglass insulation on all four sides?
A: The insulation provides thermal protection and helps prevent condensation, increasing the durability and performance of the rooftop installation.