| 081226-SS1 - Crown Custom Job | penn-hvac.com | 9560.75 USD | — | — |
| 021126-ZM8 - Special Ductwork | penn-hvac.com | 7300 USD | — | — |
| 090826-CB1 - Special Duct Work | penn-hvac.com | 500 USD | — | — |
| 301-SM 27"x27"x27" | penn-hvac.com | 221 USD | — | — |
| 332S-14 Vent Top W/ screen | penn-hvac.com | 125 USD | — | — |
| 850-010924GS | penn-hvac.com | 69.81 USD | — | — |
| 350DS12 - 12" ROOF CAP W/ DAMPER AND SCREEN | penn-hvac.com | 69.49 USD | — | — |
| 277-16x14x14x Bull Nose Wye | penn-hvac.com | 66.9 USD | — | — |
| 750- 26x54 26GA | penn-hvac.com | 58 USD | — | — |
| 353-8x8x16" Roof Jack | penn-hvac.com | 57.6 USD | — | — |
| 480- 12x17- 14" 26ga | penn-hvac.com | 52 USD | — | — |
| 750- 24x42 26GA | penn-hvac.com | 50 USD | — | — |
| 1288FL-16.5X25.5 RB - 25.5x16.5 | penn-hvac.com | 47.55 USD | — | — |
| 850- 48"x120" 28GA Flat Metal | penn-hvac.com | 47 USD | — | — |
| 349SD-10 sidewall vent with screen and damper | penn-hvac.com | 46.75 USD | — | — |
| 353668- 6" x 6" Roof Jack for Ref. Lines 8" Throat | penn-hvac.com | 43.85 USD | — | — |
| 799-2x100 26ga | penn-hvac.com | 38.1 USD | — | — |
| 1292 FL- 12x8 -8" tall | penn-hvac.com | 36.81 USD | — | — |
| Saddle Tap 18 | penn-hvac.com | 31.15 USD | — | — |
| 349SD-8 sidewall vent with screen and damper | penn-hvac.com | 31.1 USD | — | — |
| 349SD-7 sidewall vent with screen and damper | penn-hvac.com | 28.4 USD | — | — |
| Saddle Tap 16 | penn-hvac.com | 24.95 USD | — | — |
| 1292-FL 8x4-10" tall | penn-hvac.com | 24.5 USD | — | — |
| 349SD-4 Sidewall Vent W/ Screen and Damper | penn-hvac.com | 22.12 USD | — | — |
| 1126 Standing "S" Lock | penn-hvac.com | 16.66 USD | — | — |
| 793 2"x 2" 10' 26ga | penn-hvac.com | 15.96 USD | — | — |
| 6x6 Uninsulated Can - No Collar | penn-hvac.com | 15 USD | — | — |
| 616DS-10" Scoop and Damper | penn-hvac.com | 14 USD | — | — |
| 1288-FLG – 8 x 6 | penn-hvac.com | 12.05 USD | — | — |
| 1288FLG66 - 1288-FLG 6X6 | penn-hvac.com | 10.95 USD | — | — |
| 616DS-8" Scoop and Damper | penn-hvac.com | 10.5 USD | — | — |
| 1026 - Flat "S" Lock 26ga | penn-hvac.com | 9.68 USD | — | — |
| 244-8x4x4 Center End Boot | penn-hvac.com | 9.25 USD | — | — |
| 14x14 Blank 30GA | penn-hvac.com | 6.5 USD | — | — |
| 1226 - Flat Drive Cleat 26ga AKA "Drive" | penn-hvac.com | 6.35 USD | — | — |
| 241 -Straight Boot 10x4x6 | penn-hvac.com | 5.35 USD | — | — |
| 8x8 Blank 30GA | penn-hvac.com | 5.25 USD | — | — |
| ADJT ELBOW AE308 30GAUGE | penn-hvac.com | 5 USD | — | — |
| 111 4" Adjustable Elbow 30ga | penn-hvac.com | 2.75 USD | — | — |