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All Precision Roof Hatches are fabricated of heavy gauge
steel or aluminum properly finished to withstand rough handling and exposure
to the elements. Insulation in the cover and curb minimizes the effects on
the building's HVAC system. A rubber gasket, in its own formed track,
tightly seals the lid against the curb, making the unit weather tight. The
cover is devoid of all hardware except for the handle, negating areas where
corrosion and rust can form. All hatches are provided with padlock
provisions both internally and externally. Hatches of length 4' 6" or
less are equipped with a 1 point zinc-plated cablock and any hatch
longer than this are equipped with a 2 point cablock. Each roof hatch
is tested in the plant to assure smooth opening and closing with one hand.
When the length of a hatch reaches 5' 5" or longer, a 2 point slam-lock is
used.
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