Portals Plus 32121, Small RC-4A Raised Canted Curb- 9 1/2" High

The Portals Plus 32151 Large RC-4A Raised Canted Curb (9 ½″ High) is designed for insulated deck roof applications. It is constructed of 18-gauge galvanized steel with an integral base plate and continuously welded corner seams. The unit includes a factory-installed wood nailer and 1.5″ thick rigid fiberglass insulation (3-lb density) on all four sides. The raised, canted wall design provides a built-in slope above the deck surface to accommodate insulation loads and ensure a level mounting plane for rooftop equipment.

Key features:

• 18-gauge galvanized steel construction with integral base plate and continuously welded corner seams.
• Factory-installed wood nailer for secure attachment of perimeter flashings and equipment.
• 1.5″ thick rigid fiberglass insulation at 3-lb density on all four sides for thermal control.
• Raised canted wall design (RC-4A style) and 9 ½″ finished height for insulated deck applications.

• SKU: 32151 (POR-32151)
• Product type: Large RC-4A Raised Canted Curb – 9 ½″ High
• Height: 9 ½″ above finished roof deck
• Construction: 18-gauge galvanized steel shell, integral base plate, welded seams
• Insulation: 1.5″ rigid fiberglass board, 3-lb density, all four sides
• Application: Decks with rigid insulation and need for raised, sloped curb profile

Q: What deck type is this curb model intended for?
A: It is intended for insulated decks where a raised, sloped (canted) curb wall is required—RC-4A style is designed for such applications.

Q: What insulation is included in this curb?
A: The unit includes 1.5″ thick rigid fiberglass insulation with a density of 3 lb/ft³ on all four sides.

Q: Does this curb ship with pre-punched holes for penetrations?
A: No — this is a structural curb base and does not include pipe penetration knock-outs; pipe portal cover and cap systems are installed separately according to project needs.

Q: How does the raised canted design benefit rooftop equipment installations?
A: The raised canted wall builds in a slope above the deck surface, providing a level platform for mounting equipment or flashings despite insulation depth and deck slope, improving performance and reducing ponding risk.