Block-Outs

Pre-Vent Shield™ Block-Outs are designed for HVAC “SYSTEMS OFF MODE” protection.

We recommend using Block-Outs for all remediation applications including Mold, Lead Paint, Asbestos, and Interior Sandblasting, or where heavy airborne construction debris is present. Block-Outs save time and money, and are incredibly easy to use. Simply Peel, Stick, Protect. Pre-Vent Shield Block-Out applies an air-tight seal in seconds. Block-Out meets and exceeds OSHA mandates for HVAC systems remediation preparations.

To view a how to measure, vent grille style guide, and a step-by-step installation process, Click here

AIRSPACE USES MATERIALS Made in the USA MAGNETIC VINYL
Standard Tolerances
Thickness: +/- .005″ (.13 mm)*** Thickness: +/- .005″ (.13 mm) *** 1″ to 1.999″ = +/- .020″ (25.4 mm to 50.7 mm = +/- .51 mm) 2″ to 2.999″ = +/- .025″ (50.8 mm to 76.1 mm = +/- .64 mm) 3″ & greater = +/- .030″ (76.2 mm & greater = +/- .76 mm) Lengths: (custom cut) +/- 1% or +/- .015″ (+/- 1% or ≈ +/- .38 mm) whichever is greater Magnetic Pole Alignment** Strip Magnetization Formation Multi-pole Conventional through width Conventional through thickness Two poles on each face Thickness 030″ (.76 mm) .045″ (1.14 mm) .060″ (1.52 mm) Pole Spacing 12 PPI 10 PPI 10 PPI Magnetic Pull* 8.5# (50 g) 8.8# (52 g) 10.8# (63 g)
*Minimum pounds pull per lineal foot of 1″ (25.4 mm) wide at zero air gap (grams pull per square centimeter) standard energy. Contact us for information about average pull strengths and the recommended product for your application.**Other custom pole configurations are also possible. ***Tolerance is +/- .003” (.07 mm) on die cut strip .030” (.76 mm) thick or less.