GAF MasterFlow Plastic Mini Circular Louver Vent, 4 in., White (RLSC4)

GAF MasterFlow Plastic Mini Circular Louver Vent, 4 in., White (RLSC4)

Regular price $14.53

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4 in. Plastic Mini Circular Louver Vent

Compact MasterFlow circular louver vent designed for hard-to-ventilate or restricted areas. Durable plastic resin construction in white with 5.17 sq. in. net free vent area for reliable airflow.


Key Features:

  • Compact Venting Solution: Recommended for hard-to-ventilate or restricted spaces
  • Durable Construction: Made from plastic resin to resist corrosion and weathering
  • Efficient Airflow: Provides 5.17 sq. in. Net Free Vent Area (NFVA)
  • Clean Finish: White color blends with soffits and exterior trim
  • Easy Identification: 4 in. diameter mini louver fits common cutouts

Specifications Table:

Specification Details
Manufacturer Part RLSC4
Product Number GAFRLSC4
Brand GAF
Color White
Diameter 4 in.
Base Material Plastic Resin
Style Ventilation and Drainage
Net Free Vent Area (NFVA) 5.17 sq. in.
Area 5.17 sq. in.
Applicable Standards CSA Approved
Unit of Measure PC
Item Weight 0.0729 lb
Product Name MasterFlow Plastic Mini Circular Louver Vent

Frequently Asked Questions (FAQ):

Q: What size hole do I need for this vent?
A: It’s designed for a 4 in. diameter opening.


Q: What is the net free vent area (NFVA)?
A: The vent provides 5.17 square inches of NFVA.


Q: What material is the vent made of?
A: Plastic resin, which helps resist rust and corrosion.


Q: Is this suitable for intake or exhaust?
A: It can be used in ventilation applications for restricted areas; consult local codes and your system design for intake vs. exhaust use.


Q: Is it approved to CSA standards?
A: Yes, it is listed as CSA Approved.


A Sleek Whisper of Airflow

This petite circular louver slips into a façade with effortless poise, lending a clean, architectural note while quietly moving air where you need it most. The crisp white finish and fine horizontal blades feel modern and unobtrusive. Cluster a series along soffits or paint to match trim for a bespoke, seamless expression. It’s a tiny detail that elevates function to a refined essential of comfortable living.


Bring efficient airflow to tight spaces—add this 4 in. MasterFlow mini louver vent to your project today.

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