Portals Plus 22015, Alumi-Flash Standard Base w/126 Black Cap

Portals Plus Alumi-Flash Standard Base with C-126 Black Cap is a one-penetration flashing for 2″–6″ roof penetrations. The standard base is .060″ spun aluminum, 4″ high, with a 14″ base diameter and an 8″ collared opening rolled with two beaded sealing rings. The C-126 cap is molded EPDM and includes the stainless-steel Snaplock clamp; it mates to the base’s double beads to create a mechanical, weather-tight pressure seal.

Key features:

• Covers a single roof penetration from 2″ to 6″ diameter. 
• .060″ spun aluminum base (4″ high, 14″ base diameter) with 8″ collared opening and two beaded sealing rings. 
• C-126 molded EPDM cap with stainless-steel Snaplock clamp for mechanical pressure seal. 

• SKU: 22015 (POR-22015). 
• Penetration capacity: 2″–6″ single penetration. 
• Base construction: .060″ spun aluminum; 4″ height; 14″ base diameter; 8″ collared opening with two roll-formed beaded sealing rings. 
• Cap: C-126 molded EPDM with stainless-steel Snaplock clamp; double “weather-tight pressure seal” engagement to base beads. 
• Installation context: Base roofed-in per manufacturer instructions; cap mechanically sealed to base.

• Prepare and roof-in the spun aluminum base per Portals Plus instructions and the roofing membrane manufacturer’s recommendations. 
• Place the penetration through the base collar; verify size is within the 2″–6″ range. 
• Seat the C-126 EPDM cap onto the base so its internal grooves engage the two beaded sealing rings.
• Tighten the stainless-steel Snaplock clamp evenly to complete the mechanical pressure seal. 
• Inspect the assembly to confirm full bead engagement and membrane tie-in at the base flange.

Q: What penetration sizes does the standard Alumi-Flash with C-126 cap cover?
A: It covers a single penetration from 2″ to 6″ in diameter.

Q: What are the standard base dimensions and material?
A: The base is .060″ spun aluminum, 4″ tall, with a 14″ base diameter and an 8″ collared opening.

Q: How does the cap seal to the base?
A: The C-126 EPDM cap uses a stainless-steel Snaplock clamp and mates to two beads on the base collar to form a mechanical, weather-tight pressure seal.