Super-Wal extension framing arches (15” thick and made up of double 2” x 4” members) are placed 16” to 24” on center starting at the dome and continuing to the end wall of the extension. At that point, we use arches made up of 2”X8” pieces. These 2”x8” arches sit on top of the foundation extension “wing” walls and form the rain/snow canopy over the doors and windows. Arches are shipped pre-assembled in two sections due to size restrictions of the semi-trailer. Nails are provided for on-site joining of the two sections. The roof pitch is 4/12, allowing you to use shingles.

             

Extension Arches	Riser Height	Super-Wal Arch Cost	2″ x 8″ Arch Cost	Super-Wal 1 Side Straight Arch Cost
Model 500 – 26′ Mid Profile	48″	$280	$195	$330
Model 625 – 29′ Mid Profile	48″	$300	$210	$345
Model 650 – 30′ Low Profile	45″	$225	$165	$295
Model 650 – 30′ High Profile	28″	$210	$150	$290
Model 950 – 36′ Low Profile	45″	$245	$175	$305
Model 950 – 36′ High Profile	28″	$230	$165	$300
Model 1250 – 40′ Low Profile	45″	$275	$175	$320
Model 1250 – 40′ High Profile	28″	$265	$190	$325
Model 1500 – 45′ Low Profile	45″	$230	$175	$300
Model 1600 – 46′ Mid Profile	28″	$220	$165	$295
Model 1700 – 47′ Low Profile	45″	$245	$175	$305
Model 1800 – 49′ Mid Profile	28″	$230	$165	$300
Model 1900 – 50′ Low Profile	45″	$250	$180	$300
Model 2000 – 51′ Mid Profile	28″	$245	$170	$305