SQUARE ALUMINUM JOB MASTER Air & Furnace Filters Wide cap helps prevent nail

Wide cap helps prevent nail from punching through felt

(3) 1/4" male NPT plugs

Used to connect a branch line into vertical drain pipe

long lasting protection in all climates

Scraper blade for removing congealed dirt

SQUARE ALUMINUM JOB MASTER Air & Furnace Filters Wide cap helps prevent nailHigh tempered aluminum with a buffed finish. Deep graduations. Includes lumber scale with board feet equivalent, decimal equivalent table, metric conversion table, formula for squaring a foundation, volume and area formulas, wood screw gauge table, nail sizes, depth scale, 1 8" graduations front and back, plus 45, 60, and 30 angle markings. Body 24" x 2". Tongue 16" x 1 1 2".