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Scientifi cally designed aluminum mounting strips fit into pre-cut grooves in siding panels...hold them.in perfect alignment without dips or waves-permanently.

Vent in strip permits release of vapor which otherwise might be trapped. Specially designe-d fastenerg assure tight joints,

All nails are concealed in the mounting strip. No countersinking, puttying, bleed-through or working olrt of nails through surIace oI arotng.

You've never seen siding like this!

Imagine a lap siding with no visible nails. One with an eye-pleasing deep shadow that stays straight. One that's vented to let the walls "breathe". One that keeps paint new-looking longer.

Masonite Corporation is proud to introduce Shadowvent Siding-the exclusive, new application system that combines all the advantages of famous Masonite Tempered Presdwood @, plus new beauty, new speed in application and new economy.

There's no dimensional loss; the lap loss is low and the cutting loss is negIigible. Pre-packaged panels are f" t}:ick, 12" wide in lengths up to 8'. Made in the West for Western homes. See your Masonite representative now for this new profit-builder or write Masonite@ Corporation, Dept. CLM1215, ll7 Sutter St., San Francisco 4, California.