Features:

• Hot Dipped galvanized steel construction with hemmed inside return rail .
• 1.0 mil paint system includes .25 mil rust inhibiting primer and .75 mil exterior top coat that resists fading and chalking while providing consistent color from panel to panel.
• Stiles attached with rivets to provide superior strength when compared to common sheet metal joining methods.
• 17 gauge hot dipped galvanized stiles.
• Sections include tongue and groove meeting rails for superior strength and better sealing against wind, rain and snow.
• Rigid aluminum retainer provides added strength while securing replaceable u-shapped bottom weatherstrip.
• Model 4400 features smooth finish.
• Model 4500 features pebble grain finish.
• Models 4401 and 4501 are insulated (R value: 6.85) with CFC Free expanded polystyrene with a high impact plastic back cover.