MASTER FLOW ERV4 Silver Power Attic Vent Roof Mount Owner’s Manual
- July 31, 2024
- Master Flow
Table of Contents
Attic Exhaust Ventilation
Master Flow®
Power Attic Vent
Roof Mount
Remove excess heat and moisture from your attic and protect your roof system from premature deterioration
ERV4 Silver Power Attic Vent Roof Mount
- Improve energy efficiency by reducing attic heat and your summer airconditioning load
- Exhaust a larger amount of heat and moisture vs. typical static exhaust vents
- Limit the growth of harmful mold and mildew
Benefits:
- Exhausts large amounts of heat and moisture from the attic
- High-efficiency PSC motor uses less energy vs. typical competitors’ vents¹
- Compact size and hemmed dome for a sleek finished look
- Adjustable thermostat included on all models. Optional humidistat/thermostat available on select models.
- Weather-resistant design passes the 110 mph wind-driven rain test²
- Popular colors to complement your finished roof (see chart below)
- Eligible component for GAF residential enhanced warranties
Balanced Ventilation:
Balanced attic ventilation means there’s an equal amount of air entering it as
there is exiting it. The amount of exhaust ventilation must never exceed the
amount of intake ventilation at the soffits or eaves. GAF recommends a minimum
of 1 sq. ft. of net free ventilation for every 300 sq. ft. of attic floor
space. Always consult local building codes for specific ventilation
requirements.
How Much Do I Need?
Calculate the total square footage of your attic floor space and then review
the chart below for the recommended Master Flow® Power Attic Vent – Roof Mount
model:
Total Attic Sq. Footage| Recommended Power Attic Vent Roof Mount
Model| Minimum Intake Ventilation (net free area in sq.
in.)
---|---|---
Up to 1,600| ERV4| 480
Up to 2,200| ERV5| 600
Up to 2,800| ERV6| 720
Note: Always have a balanced attic ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation. Visit www.gaf.com/ventcalculator for more details.
Available Models & Key Features
| ERV4| ERV5| ERV6
---|---|---|---
CFM Airflow| 1,000| 1,250| 1,500
Maximum Attic Floor Sq. Footage| 1,600| 2,200| 2,800
Minimum Intake Ventilation Required (sq. inches of NFA)| 480| 600| 720
Energy Usage vs. Typical Competitors’ Vents 1| Up to 55% less| Up to
55% less| Up to 15% less
Thermostat Included| Yes| Yes| Yes
Optional Humidistat/Thermostat Available| –| Yes| Yes
Ltd. Warranty Against Manufacturing Defects 3 (years)| 5| 5| 10
Labor Protection Plus 3 (years)| 2| 3| 5
**Colors Available| ** Mill, Black, Brown & Weathered Wood| ****
Mill, Black, Brown & Weathered Wood| Black, Brown, Weathered Wood &
ShingleMatchTM Weathered Wood
Product details:
Nominal Specifications
- For roof pitches 2:12 – 12:12
- Opening size: 15″ (381 mm)
- Thermostat and internal screen included
- Optional humidistat/thermostat available (ERV5HT & ERV6HT models)
Code Approvals & Standards
- Miami-Dade County Product Control approved
- State of Florida Approved
- Texas Department of Insurance Product Evaluation RV-38
- UL Listed⁴
- Warm, moist air is exhausted from the attic through the Master Flow® Power Attic Vent Roof Mount
- Fresh air enters attic through intake vent at the soffit or eave¹ Based on GAF testing at 120 volts.
- Under controlled laboratory testing conducted by GAF.
- See Master Flow® Powered Ventilation Products Limited Warranty for complete coverage and restrictions.
- Always refer to UL Online Certification Directory.
We protect what matters most™
PowerAtticVent
Roof Mount
©2020 GAF 8/20 • #105 369380-1219
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