Patented design maintains vapor barrier integrity behind J-boxes and plaster rings to meet new “tight-building” codes, protects in-wall components from harmful moisture and dirt, “Bullseye” design lets you make more accurate wall cuts, attaches to studs quickly with staple gun, adjustable for narrower cavities, rugged and lightweight, yet flexible in cold temperatures, store flat for easy inventory and transport, will hold up to 3-gang box, sold as a box of 48 units.
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