Pro-Flash building seals provide a lasting, economical solution to sealing the various penetrations that come through a building’s exterior. These seals are flexible and slide over pipe and HVAC penetrations to form an instant seal. Each unit also comes conveniently equipped with score lines to accommodate multiple sizes. The patented central seal is surrounded by either a breathable or non-breathable membrane both of which easily integrate into any building system. Electrical boxes can also be protected with our innovative closed cap designs.
Please call for any Breathable WR Model orders or inquiries!
Features
- Watertight elastomeric seal provides a moisture barrier over penetration
- Flexible
- Score lines allow for multiple pipe sizes
- Flexible & loose fit for Electric box, where one size fits most
- No Taping or Caulking required
Our Lineup
Nominal pipe - 0.125”- 0.375”, 0.5”, 0.75”, 1”, 1.25”, 1.5”, 1.75”, 2”, 3”, 4”, 6”
HVAC hoods/vents and SDR pipe - 4”, 5”, 6”
Electrical single gang rectangular box - Open face, Closed Cap
Electrical single gang round/octagon box - Open face, Closed 3”, Closed 4”
Electrical double gang rectangular box
Greenskin
Designed to be the world class standard for HVAC, electrical, and plumbing penetration seals. Greenskin seals are made from a polyethylene material which is easy to apply and provides a tight seal for building penetrations.
Greenskins are also a cost effective and simple solution to seal all ground penetrations from which Radon Gas can leak into a home.
Please call for any Electrical Greenskin orders or inquiries!
Features
- CCMC certified
- Simplifies sealing for HVAC, electrical, plumbing, etc. building penetrations
- Watertight/ Friction fit seal provides a moisture barrier to penetration
- Dimples along the Greenskin material keep it raised off the wood allowing air flow
- Flexible& loose fit for Electric box, where one size fits most
- Material is UV rated, non-conductive, non-corrosive
- No Taping or Caulking required
Our Lineup
Nominal pipe - 0.5”, 0.75”, 1”, 1.25”, 1.5”, 2”, 3”, 4”, 6”
HVAC hoods/vents and SDR pipe - 4”, 5”, 6”
Electrical single gang rectangular box - Open face, Closed Cap
Electrical single gang round/octagon box - Open face, Closed 3”, Closed 4
Electrical double gang rectangular box
Faceplates & Mounting Blocks

Faceplate- Single Hole

Meter Pocket
Provides a durable and decorative finish for any building penetration. The white UV rated PVC material is paintable and will not rust, rot, swell or peel. Available in a wide range of standard sizes as well as custom sizes for unique applications.
The Meter Pocket is designed to be weather resistant housing for Meter-Sockets. It eliminates all leakage problems from wind, driving rain and snow while creating a self-draining barrier around the Meter Socket.
Call for any direct orders or inquiries!
Features
- UV rated PVC material provides durable & decorative finish
- Will not rust, rot, swell or peel
- Optional neoprene rubber gasket, seals to wall and around pipe penetration
Meter Pocket-
- Mounting gaskets included providing sealed housing for Meter Sockets
- Eliminates leaks/drafts or the need for spray insulation around Meter Socket
- Easy installation with adjustable J-trim for all finishes
- Cleanest finish among current building practices
- May be rotated and used for electrical piping entry into buildings
Our Lineup
Blank with no hole/Mounting Blocks - 4.5” x 10”, 6” x 6”, 6” x 12”, 6” x 16”, 8” x 8”, 12” x 18”, 24” x 12
Single hole - 6” x 6” with 1.5”, 2” or 3” hole, 8” x 8” with 4” hole
Two 2” holes - 4.5” x 10”, 6” x 12”, 6” x 16”
Two 3” holes - 6” x 12”, 6” x 16”
Meter Pocket - Mounting plate for Meter Sockets
Custom Sizes Available!
Meter Pocket

The Meter Pocket is designed to be weather resistant housing for Meter-Sockets. It eliminates all leakage problems from wind, driving rain and snow while creating a self-draining barrier around the Meter Socket.
Call for any direct orders or inquiries!
Links
Features
- Mounting gaskets included providing sealed housing for Meter Sockets
- Eliminates leaks/drafts or the need for spray insulation around Meter Socket
- Easy installation with adjustable J-trim for all finishes
- Cleanest finish among current building practices
- May be rotated and used for electrical piping entry into buildings
Backwater Valves

Pro-Flash’s sister company, Mainline Backflow Products, is the professionals’ choice for sewer backup protection. Mainline offers a series of unique backwater valves for a variety of different applications and installations. For more information visit www.backwatervalve.com.
Designed to be a professional and economical solution for sealing HVAC and plumbing penetrations. Wrap-Tite seals are made from a polyethylene material which is easy to apply and provides a tight seal for building penetrations. Model numbers with WT6 have a 6” x 6” footprint.
Call for any direct orders or inquiries!
Features
- Simplifies sealing for HVAC, plumbing, etc. building penetrations
- Watertight/ Friction fit seal provides a moisture barrier to penetration
- Material is UV rated, non-conductive, non-corrosive
- No Taping or Caulking required
Our Lineup
Nominal pipe - 0.5”, 0.75”, 1”, 1.25”, 1.5”, 2”Blank size