Portals Plus 23035, Alumi-Flash Extra Wide Base w/412 Black Cap

The Portals Plus 23035 Alumi-Flash Extra Wide Base w/ C-412 Black Cap is designed for flashing roof systems where up to four penetrations of 1″-2″ diameter pass through a single base. The unit includes a .060″ spun aluminum base, 4″ high, with an 18″ base diameter and an 8″ collared opening featuring two roll-formed sealing rings. The molded EPDM C-412 cap is supplied with the stainless-steel Snaplock clamp and the assembly is intended to form a mechanical, weather-tight pressure seal between the cap and base.

Key features:

• Supports up to four pipes sized 1″-2″ in diameter.
• .060″ spun aluminum base unit, 4″ height, 18″ base diameter, 8″ collared opening with two roll-formed sealing beads. 
• Molded EPDM cap model C-412 paired with a stainless-steel Snaplock clamp for mechanical sealing. 
• Designed for retrofit or new roof flashing where multiple penetrations are grouped through one base.

• SKU: 23035 (POR-23035)
• Product type: Alumi-Flash Extra Wide Base with C-412 Black Cap
• Penetration capacity: Up to four pipes sized 1″-2″ in diameter. 
• Base construction: .060″ spun aluminum; 4″ height; 18″ base diameter; 8″ collared opening with two roll-formed sealing rings. 
• Cap: EPDM molded cap model C-412 with stainless-steel Snaplock clamp included.

• Install and roof-in the spun aluminum base per Portals Plus instructions and the roofing membrane manufacturer’s guidelines.
• Insert the up to four penetrations (1″-2″ diameter) through the base collar opening.
• Place the C-412 EPDM cap onto the collar so its internal grooves engage the two roll-formed sealing rings.
• Tighten the stainless-steel Snaplock clamp evenly to complete the mechanical seal.
• Inspect the assembly to ensure proper bead engagement and secure clamp fit.

Q: What penetration sizes does this model support?
A: It supports up to four pipes sized 1″-2″ in diameter.

Q: What are the base dimensions and materials?
A: The base is constructed of .060″ spun aluminum, 4″ high, with an 18″ base diameter and an 8″ collared opening with two sealing beads.

Q: How does the C-412 cap seal to the base?
A: The molded EPDM cap seats over the collar beads and the included stainless-steel Snaplock clamp completes the seal.

Q: Are the clamp and cap included with the base?
A: Yes. The C-412 cap comes with the Snaplock clamp for sealing the cap to the base.