Portals Plus 22045, Alumi-Flash Standard Base w/481 Black Cap

The Portals Plus 22045 Alumi-Flash Standard Base w/ C-481 Black Cap is designed for roof applications where up to four penetrations of .375″ to 1″ diameter pass through a single flashing unit. The system includes a .060-inch spun aluminum base, 4″ high with a 14″ base diameter and an 8″ collared opening featuring two roll-formed sealing beads. The C-481 molded EPDM cap includes the stainless-steel Snaplock clamp and, when seated over the base collar beads, forms a mechanical weather-tight pressure seal.

Key features:

• Designed for up to four pipes sized .375″-1″ in diameter passing through one flashing unit.
• .060″ spun aluminum base unit, 4″ in height, 14″ base diameter, 8″ collared opening with two beaded sealing rings.
• C-481 molded EPDM cap paired with stainless-steel Snaplock clamp to form a mechanical seal.
• Suitable for all types of roof systems and eliminates the need for pitch pans by accommodating grouped penetrations.

• SKU: 22045 (POR-22045)
• Product type: Alumi-Flash Standard Base w/ C-481 Black Cap
• Penetration capacity: Up to four pipes, each .375″-1″ diameter
• Base construction: .060″ spun aluminum; 4″ height; 14″ base diameter; 8″ collared opening; two roll-formed sealing beads
• Cap: EPDM molded cap model C-481 with stainless-steel Snaplock clamp
• Installation: Mechanical press-seal by seating cap grooves over base beads and tightening the clamp according to manufacturer instructions

• Prepare and install the spun aluminum base according to Portals Plus instructions and the roofing membrane manufacturer’s guidelines.
• Run up to four penetrations of .375″-1″ diameter through the 8″ collared opening.
• Place the C-481 EPDM cap over the collar ensuring its grooves align with the two sealing beads.
• Tighten the stainless-steel Snaplock clamp evenly to complete the mechanical seal.
• Inspect the assembly to make sure the sealing beads are fully engaged and the clamp is secure.

Q: What size of penetrations does model 22045 support?
A: It supports up to four pipes each .375″ to 1″ in diameter.

Q: What are the base dimensions and materials for this model?
A: The base is made from .060″ spun aluminum, is 4″ tall, has a 14″ base diameter, and includes an 8″ collared opening with two roll-formed sealing beads.

Q: How does the C-481 cap seal to the base?
A: The molded EPDM cap seats over the two sealing beads on the base collar, and the stainless-steel Snaplock clamp secures the assembly to form a mechanical weather-tight seal.

Q: Can this product be used on all roof types?
A: Yes. The Alumi-Flash Standard system is compatible with all roof types and is designed to accommodate multiple penetrations in a single unit.